Home / 21,306.39-29,402.92-12,359.19

Finding the Fourth Proportional to 21,306.39, 29,402.92 and 12,359.19

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Solution

The fourth proportional to 21,306.39, 29,402.92 and 12,359.19 is: 17,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.39 : 29,402.92 = 12,359.19 : x
  2. Step 2: Convert to fraction form
    21,306.39/29,402.92 = 12,359.19/x
  3. Step 3: Cross multiply
    21,306.39x = 29,402.92 × 12,359.19
  4. Step 4: Simplify right side
    21,306.39x = 363,396,274.83
  5. Step 5: Solve for x
    x = 363,396,274.83/21,306.39
  6. Step 6: Final answer
    x = 17,055.74

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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.