Home / 23,115.47-31,899.29-12,505.28

Finding the Fourth Proportional to 23,115.47, 31,899.29 and 12,505.28

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Solution

The fourth proportional to 23,115.47, 31,899.29 and 12,505.28 is: 17,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.47 : 31,899.29 = 12,505.28 : x
  2. Step 2: Convert to fraction form
    23,115.47/31,899.29 = 12,505.28/x
  3. Step 3: Cross multiply
    23,115.47x = 31,899.29 × 12,505.28
  4. Step 4: Simplify right side
    23,115.47x = 398,909,331.23
  5. Step 5: Solve for x
    x = 398,909,331.23/23,115.47
  6. Step 6: Final answer
    x = 17,257.25

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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.