Home / 10,187.01-15,239.61-8,815.28

Finding the Fourth Proportional to 10,187.01, 15,239.61 and 8,815.28

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Solution

The fourth proportional to 10,187.01, 15,239.61 and 8,815.28 is: 13,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.01 : 15,239.61 = 8,815.28 : x
  2. Step 2: Convert to fraction form
    10,187.01/15,239.61 = 8,815.28/x
  3. Step 3: Cross multiply
    10,187.01x = 15,239.61 × 8,815.28
  4. Step 4: Simplify right side
    10,187.01x = 134,341,353.04
  5. Step 5: Solve for x
    x = 134,341,353.04/10,187.01
  6. Step 6: Final answer
    x = 13,187.52

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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.