Home / 21,251.11-29,275.77-14,865.79

Finding the Fourth Proportional to 21,251.11, 29,275.77 and 14,865.79

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Solution

The fourth proportional to 21,251.11, 29,275.77 and 14,865.79 is: 20,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.11 : 29,275.77 = 14,865.79 : x
  2. Step 2: Convert to fraction form
    21,251.11/29,275.77 = 14,865.79/x
  3. Step 3: Cross multiply
    21,251.11x = 29,275.77 × 14,865.79
  4. Step 4: Simplify right side
    21,251.11x = 435,207,448.91
  5. Step 5: Solve for x
    x = 435,207,448.91/21,251.11
  6. Step 6: Final answer
    x = 20,479.28

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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.