Home / 20,776,504.60-31,164,756.90-9,988,252.30

Finding the Fourth Proportional to 20,776,504.60, 31,164,756.90 and 9,988,252.30

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Solution

The fourth proportional to 20,776,504.60, 31,164,756.90 and 9,988,252.30 is: 14,982,378.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,504.60 : 31,164,756.90 = 9,988,252.30 : x
  2. Step 2: Convert to fraction form
    20,776,504.60/31,164,756.90 = 9,988,252.30/x
  3. Step 3: Cross multiply
    20,776,504.60x = 31,164,756.90 × 9,988,252.30
  4. Step 4: Simplify right side
    20,776,504.60x = 311,281,454,785,365.88
  5. Step 5: Solve for x
    x = 311,281,454,785,365.88/20,776,504.60
  6. Step 6: Final answer
    x = 14,982,378.45

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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.