Home / 21,325.97-29,417.14-13,354.36

Finding the Fourth Proportional to 21,325.97, 29,417.14 and 13,354.36

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Solution

The fourth proportional to 21,325.97, 29,417.14 and 13,354.36 is: 18,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.97 : 29,417.14 = 13,354.36 : x
  2. Step 2: Convert to fraction form
    21,325.97/29,417.14 = 13,354.36/x
  3. Step 3: Cross multiply
    21,325.97x = 29,417.14 × 13,354.36
  4. Step 4: Simplify right side
    21,325.97x = 392,847,077.73
  5. Step 5: Solve for x
    x = 392,847,077.73/21,325.97
  6. Step 6: Final answer
    x = 18,421.06

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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.