Home / 28,359.17-42,545.11-8,639.27

Finding the Fourth Proportional to 28,359.17, 42,545.11 and 8,639.27

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Solution

The fourth proportional to 28,359.17, 42,545.11 and 8,639.27 is: 12,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.17 : 42,545.11 = 8,639.27 : x
  2. Step 2: Convert to fraction form
    28,359.17/42,545.11 = 8,639.27/x
  3. Step 3: Cross multiply
    28,359.17x = 42,545.11 × 8,639.27
  4. Step 4: Simplify right side
    28,359.17x = 367,558,649.27
  5. Step 5: Solve for x
    x = 367,558,649.27/28,359.17
  6. Step 6: Final answer
    x = 12,960.84

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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.