Home / 23,428.80-32,331.24-12,818.40

Finding the Fourth Proportional to 23,428.80, 32,331.24 and 12,818.40

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Solution

The fourth proportional to 23,428.80, 32,331.24 and 12,818.40 is: 17,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,428.80 : 32,331.24 = 12,818.40 : x
  2. Step 2: Convert to fraction form
    23,428.80/32,331.24 = 12,818.40/x
  3. Step 3: Cross multiply
    23,428.80x = 32,331.24 × 12,818.40
  4. Step 4: Simplify right side
    23,428.80x = 414,434,766.82
  5. Step 5: Solve for x
    x = 414,434,766.82/23,428.80
  6. Step 6: Final answer
    x = 17,689.12

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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.