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Finding the Fourth Proportional to 15,000.12, 22,500.90 and 6,678.72

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Solution

The fourth proportional to 15,000.12, 22,500.90 and 6,678.72 is: 10,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.12 : 22,500.90 = 6,678.72 : x
  2. Step 2: Convert to fraction form
    15,000.12/22,500.90 = 6,678.72/x
  3. Step 3: Cross multiply
    15,000.12x = 22,500.90 × 6,678.72
  4. Step 4: Simplify right side
    15,000.12x = 150,277,210.85
  5. Step 5: Solve for x
    x = 150,277,210.85/15,000.12
  6. Step 6: Final answer
    x = 10,018.40

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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.