Home / 10,442.52-15,668.64-5,242.32

Finding the Fourth Proportional to 10,442.52, 15,668.64 and 5,242.32

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Solution

The fourth proportional to 10,442.52, 15,668.64 and 5,242.32 is: 7,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.52 : 15,668.64 = 5,242.32 : x
  2. Step 2: Convert to fraction form
    10,442.52/15,668.64 = 5,242.32/x
  3. Step 3: Cross multiply
    10,442.52x = 15,668.64 × 5,242.32
  4. Step 4: Simplify right side
    10,442.52x = 82,140,024.84
  5. Step 5: Solve for x
    x = 82,140,024.84/10,442.52
  6. Step 6: Final answer
    x = 7,865.92

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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.