Home / 22,680.31-31,299.20-12,471.77

Finding the Fourth Proportional to 22,680.31, 31,299.20 and 12,471.77

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Solution

The fourth proportional to 22,680.31, 31,299.20 and 12,471.77 is: 17,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,680.31 : 31,299.20 = 12,471.77 : x
  2. Step 2: Convert to fraction form
    22,680.31/31,299.20 = 12,471.77/x
  3. Step 3: Cross multiply
    22,680.31x = 31,299.20 × 12,471.77
  4. Step 4: Simplify right side
    22,680.31x = 390,356,423.58
  5. Step 5: Solve for x
    x = 390,356,423.58/22,680.31
  6. Step 6: Final answer
    x = 17,211.25

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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.