Home / 21,306.09-29,402.55-11,875.26

Finding the Fourth Proportional to 21,306.09, 29,402.55 and 11,875.26

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Solution

The fourth proportional to 21,306.09, 29,402.55 and 11,875.26 is: 16,387.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.09 : 29,402.55 = 11,875.26 : x
  2. Step 2: Convert to fraction form
    21,306.09/29,402.55 = 11,875.26/x
  3. Step 3: Cross multiply
    21,306.09x = 29,402.55 × 11,875.26
  4. Step 4: Simplify right side
    21,306.09x = 349,162,925.91
  5. Step 5: Solve for x
    x = 349,162,925.91/21,306.09
  6. Step 6: Final answer
    x = 16,387.94

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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.