Home / 15,188.78-22,779.77-5,328.11

Finding the Fourth Proportional to 15,188.78, 22,779.77 and 5,328.11

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Solution

The fourth proportional to 15,188.78, 22,779.77 and 5,328.11 is: 7,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.78 : 22,779.77 = 5,328.11 : x
  2. Step 2: Convert to fraction form
    15,188.78/22,779.77 = 5,328.11/x
  3. Step 3: Cross multiply
    15,188.78x = 22,779.77 × 5,328.11
  4. Step 4: Simplify right side
    15,188.78x = 121,373,150.64
  5. Step 5: Solve for x
    x = 121,373,150.64/15,188.78
  6. Step 6: Final answer
    x = 7,990.97

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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.