Home / 21,088.76-29,101.68-11,656.71

Finding the Fourth Proportional to 21,088.76, 29,101.68 and 11,656.71

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Solution

The fourth proportional to 21,088.76, 29,101.68 and 11,656.71 is: 16,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.76 : 29,101.68 = 11,656.71 : x
  2. Step 2: Convert to fraction form
    21,088.76/29,101.68 = 11,656.71/x
  3. Step 3: Cross multiply
    21,088.76x = 29,101.68 × 11,656.71
  4. Step 4: Simplify right side
    21,088.76x = 339,229,844.27
  5. Step 5: Solve for x
    x = 339,229,844.27/21,088.76
  6. Step 6: Final answer
    x = 16,085.82

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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.