Home / 18,639.92-25,731.16-13,325.52

Finding the Fourth Proportional to 18,639.92, 25,731.16 and 13,325.52

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Solution

The fourth proportional to 18,639.92, 25,731.16 and 13,325.52 is: 18,394.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.92 : 25,731.16 = 13,325.52 : x
  2. Step 2: Convert to fraction form
    18,639.92/25,731.16 = 13,325.52/x
  3. Step 3: Cross multiply
    18,639.92x = 25,731.16 × 13,325.52
  4. Step 4: Simplify right side
    18,639.92x = 342,881,087.20
  5. Step 5: Solve for x
    x = 342,881,087.20/18,639.92
  6. Step 6: Final answer
    x = 18,394.99

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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.