Home / 21,776.72-30,061.07-14,712.71

Finding the Fourth Proportional to 21,776.72, 30,061.07 and 14,712.71

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Solution

The fourth proportional to 21,776.72, 30,061.07 and 14,712.71 is: 20,309.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.72 : 30,061.07 = 14,712.71 : x
  2. Step 2: Convert to fraction form
    21,776.72/30,061.07 = 14,712.71/x
  3. Step 3: Cross multiply
    21,776.72x = 30,061.07 × 14,712.71
  4. Step 4: Simplify right side
    21,776.72x = 442,279,917.13
  5. Step 5: Solve for x
    x = 442,279,917.13/21,776.72
  6. Step 6: Final answer
    x = 20,309.76

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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.