Home / 20,737.24-28,617.78-12,358.60

Finding the Fourth Proportional to 20,737.24, 28,617.78 and 12,358.60

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Solution

The fourth proportional to 20,737.24, 28,617.78 and 12,358.60 is: 17,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.24 : 28,617.78 = 12,358.60 : x
  2. Step 2: Convert to fraction form
    20,737.24/28,617.78 = 12,358.60/x
  3. Step 3: Cross multiply
    20,737.24x = 28,617.78 × 12,358.60
  4. Step 4: Simplify right side
    20,737.24x = 353,675,695.91
  5. Step 5: Solve for x
    x = 353,675,695.91/20,737.24
  6. Step 6: Final answer
    x = 17,055.10

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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.