Home / 21,254.09-29,337.19-13,700.43

Finding the Fourth Proportional to 21,254.09, 29,337.19 and 13,700.43

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Solution

The fourth proportional to 21,254.09, 29,337.19 and 13,700.43 is: 18,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.09 : 29,337.19 = 13,700.43 : x
  2. Step 2: Convert to fraction form
    21,254.09/29,337.19 = 13,700.43/x
  3. Step 3: Cross multiply
    21,254.09x = 29,337.19 × 13,700.43
  4. Step 4: Simplify right side
    21,254.09x = 401,932,083.74
  5. Step 5: Solve for x
    x = 401,932,083.74/21,254.09
  6. Step 6: Final answer
    x = 18,910.82

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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.