Home / 21,309.20-29,394.50-13,337.58

Finding the Fourth Proportional to 21,309.20, 29,394.50 and 13,337.58

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Solution

The fourth proportional to 21,309.20, 29,394.50 and 13,337.58 is: 18,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.20 : 29,394.50 = 13,337.58 : x
  2. Step 2: Convert to fraction form
    21,309.20/29,394.50 = 13,337.58/x
  3. Step 3: Cross multiply
    21,309.20x = 29,394.50 × 13,337.58
  4. Step 4: Simplify right side
    21,309.20x = 392,051,495.31
  5. Step 5: Solve for x
    x = 392,051,495.31/21,309.20
  6. Step 6: Final answer
    x = 18,398.23

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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.