Home / 28,378.08-42,553.92-8,658.72

Finding the Fourth Proportional to 28,378.08, 42,553.92 and 8,658.72

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Solution

The fourth proportional to 28,378.08, 42,553.92 and 8,658.72 is: 12,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.08 : 42,553.92 = 8,658.72 : x
  2. Step 2: Convert to fraction form
    28,378.08/42,553.92 = 8,658.72/x
  3. Step 3: Cross multiply
    28,378.08x = 42,553.92 × 8,658.72
  4. Step 4: Simplify right side
    28,378.08x = 368,462,478.18
  5. Step 5: Solve for x
    x = 368,462,478.18/28,378.08
  6. Step 6: Final answer
    x = 12,984.05

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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.