Home / 21,306.66-29,404.19-11,875.29

Finding the Fourth Proportional to 21,306.66, 29,404.19 and 11,875.29

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Solution

The fourth proportional to 21,306.66, 29,404.19 and 11,875.29 is: 16,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.66 : 29,404.19 = 11,875.29 : x
  2. Step 2: Convert to fraction form
    21,306.66/29,404.19 = 11,875.29/x
  3. Step 3: Cross multiply
    21,306.66x = 29,404.19 × 11,875.29
  4. Step 4: Simplify right side
    21,306.66x = 349,183,283.47
  5. Step 5: Solve for x
    x = 349,183,283.47/21,306.66
  6. Step 6: Final answer
    x = 16,388.46

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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.