Home / 15,399.48-21,244.14-9,731.64

Finding the Fourth Proportional to 15,399.48, 21,244.14 and 9,731.64

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Solution

The fourth proportional to 15,399.48, 21,244.14 and 9,731.64 is: 13,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.48 : 21,244.14 = 9,731.64 : x
  2. Step 2: Convert to fraction form
    15,399.48/21,244.14 = 9,731.64/x
  3. Step 3: Cross multiply
    15,399.48x = 21,244.14 × 9,731.64
  4. Step 4: Simplify right side
    15,399.48x = 206,740,322.59
  5. Step 5: Solve for x
    x = 206,740,322.59/15,399.48
  6. Step 6: Final answer
    x = 13,425.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.