Home / 19,121.52-28,666.08-8,589.36

Finding the Fourth Proportional to 19,121.52, 28,666.08 and 8,589.36

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Solution

The fourth proportional to 19,121.52, 28,666.08 and 8,589.36 is: 12,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.52 : 28,666.08 = 8,589.36 : x
  2. Step 2: Convert to fraction form
    19,121.52/28,666.08 = 8,589.36/x
  3. Step 3: Cross multiply
    19,121.52x = 28,666.08 × 8,589.36
  4. Step 4: Simplify right side
    19,121.52x = 246,223,280.91
  5. Step 5: Solve for x
    x = 246,223,280.91/19,121.52
  6. Step 6: Final answer
    x = 12,876.76

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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.