Home / 11,505.30-15,877.13-6,400.62

Finding the Fourth Proportional to 11,505.30, 15,877.13 and 6,400.62

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Solution

The fourth proportional to 11,505.30, 15,877.13 and 6,400.62 is: 8,832.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.30 : 15,877.13 = 6,400.62 : x
  2. Step 2: Convert to fraction form
    11,505.30/15,877.13 = 6,400.62/x
  3. Step 3: Cross multiply
    11,505.30x = 15,877.13 × 6,400.62
  4. Step 4: Simplify right side
    11,505.30x = 101,623,443.82
  5. Step 5: Solve for x
    x = 101,623,443.82/11,505.30
  6. Step 6: Final answer
    x = 8,832.75

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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.