Home / 21,123,853.60-31,685,780.40-5,167,501.60

Finding the Fourth Proportional to 21,123,853.60, 31,685,780.40 and 5,167,501.60

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Solution

The fourth proportional to 21,123,853.60, 31,685,780.40 and 5,167,501.60 is: 7,751,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123,853.60 : 31,685,780.40 = 5,167,501.60 : x
  2. Step 2: Convert to fraction form
    21,123,853.60/31,685,780.40 = 5,167,501.60/x
  3. Step 3: Cross multiply
    21,123,853.60x = 31,685,780.40 × 5,167,501.60
  4. Step 4: Simplify right side
    21,123,853.60x = 163,736,320,914,248.62
  5. Step 5: Solve for x
    x = 163,736,320,914,248.62/21,123,853.60
  6. Step 6: Final answer
    x = 7,751,252.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.