Home / 11,187.10-16,761.45-5,331.10

Finding the Fourth Proportional to 11,187.10, 16,761.45 and 5,331.10

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Solution

The fourth proportional to 11,187.10, 16,761.45 and 5,331.10 is: 7,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.10 : 16,761.45 = 5,331.10 : x
  2. Step 2: Convert to fraction form
    11,187.10/16,761.45 = 5,331.10/x
  3. Step 3: Cross multiply
    11,187.10x = 16,761.45 × 5,331.10
  4. Step 4: Simplify right side
    11,187.10x = 89,356,966.10
  5. Step 5: Solve for x
    x = 89,356,966.10/11,187.10
  6. Step 6: Final answer
    x = 7,987.50

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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.