Home / 12,581.28-18,864.42-5,557.74

Finding the Fourth Proportional to 12,581.28, 18,864.42 and 5,557.74

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Solution

The fourth proportional to 12,581.28, 18,864.42 and 5,557.74 is: 8,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.28 : 18,864.42 = 5,557.74 : x
  2. Step 2: Convert to fraction form
    12,581.28/18,864.42 = 5,557.74/x
  3. Step 3: Cross multiply
    12,581.28x = 18,864.42 × 5,557.74
  4. Step 4: Simplify right side
    12,581.28x = 104,843,541.61
  5. Step 5: Solve for x
    x = 104,843,541.61/12,581.28
  6. Step 6: Final answer
    x = 8,333.30

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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.