Home / 21,207.44-31,816.40-14,979.60

Finding the Fourth Proportional to 21,207.44, 31,816.40 and 14,979.60

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Solution

The fourth proportional to 21,207.44, 31,816.40 and 14,979.60 is: 22,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.44 : 31,816.40 = 14,979.60 : x
  2. Step 2: Convert to fraction form
    21,207.44/31,816.40 = 14,979.60/x
  3. Step 3: Cross multiply
    21,207.44x = 31,816.40 × 14,979.60
  4. Step 4: Simplify right side
    21,207.44x = 476,596,870.54
  5. Step 5: Solve for x
    x = 476,596,870.54/21,207.44
  6. Step 6: Final answer
    x = 22,473.10

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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.