Home / 20,712.83-31,038.52-15,213.95

Finding the Fourth Proportional to 20,712.83, 31,038.52 and 15,213.95

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Solution

The fourth proportional to 20,712.83, 31,038.52 and 15,213.95 is: 22,798.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.83 : 31,038.52 = 15,213.95 : x
  2. Step 2: Convert to fraction form
    20,712.83/31,038.52 = 15,213.95/x
  3. Step 3: Cross multiply
    20,712.83x = 31,038.52 × 15,213.95
  4. Step 4: Simplify right side
    20,712.83x = 472,218,298.13
  5. Step 5: Solve for x
    x = 472,218,298.13/20,712.83
  6. Step 6: Final answer
    x = 22,798.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.