Home / 11,000.69-15,155.28-8,999.58

Finding the Fourth Proportional to 11,000.69, 15,155.28 and 8,999.58

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Solution

The fourth proportional to 11,000.69, 15,155.28 and 8,999.58 is: 12,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.69 : 15,155.28 = 8,999.58 : x
  2. Step 2: Convert to fraction form
    11,000.69/15,155.28 = 8,999.58/x
  3. Step 3: Cross multiply
    11,000.69x = 15,155.28 × 8,999.58
  4. Step 4: Simplify right side
    11,000.69x = 136,391,154.78
  5. Step 5: Solve for x
    x = 136,391,154.78/11,000.69
  6. Step 6: Final answer
    x = 12,398.42

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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.