Home / 9,176.90-12,658.48-8,000.78

Finding the Fourth Proportional to 9,176.90, 12,658.48 and 8,000.78

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Solution

The fourth proportional to 9,176.90, 12,658.48 and 8,000.78 is: 11,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,176.90 : 12,658.48 = 8,000.78 : x
  2. Step 2: Convert to fraction form
    9,176.90/12,658.48 = 8,000.78/x
  3. Step 3: Cross multiply
    9,176.90x = 12,658.48 × 8,000.78
  4. Step 4: Simplify right side
    9,176.90x = 101,277,630.32
  5. Step 5: Solve for x
    x = 101,277,630.32/9,176.90
  6. Step 6: Final answer
    x = 11,036.15

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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.