Home / 11,117.62-15,337.56-6,400.90

Finding the Fourth Proportional to 11,117.62, 15,337.56 and 6,400.90

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Solution

The fourth proportional to 11,117.62, 15,337.56 and 6,400.90 is: 8,830.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.62 : 15,337.56 = 6,400.90 : x
  2. Step 2: Convert to fraction form
    11,117.62/15,337.56 = 6,400.90/x
  3. Step 3: Cross multiply
    11,117.62x = 15,337.56 × 6,400.90
  4. Step 4: Simplify right side
    11,117.62x = 98,174,187.80
  5. Step 5: Solve for x
    x = 98,174,187.80/11,117.62
  6. Step 6: Final answer
    x = 8,830.50

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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.