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Finding the Fourth Proportional to 14,391.52, 21,597 and 5,157.52

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Solution

The fourth proportional to 14,391.52, 21,597 and 5,157.52 is: 7,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.52 : 21,597 = 5,157.52 : x
  2. Step 2: Convert to fraction form
    14,391.52/21,597 = 5,157.52/x
  3. Step 3: Cross multiply
    14,391.52x = 21,597 × 5,157.52
  4. Step 4: Simplify right side
    14,391.52x = 111,386,959.44
  5. Step 5: Solve for x
    x = 111,386,959.44/14,391.52
  6. Step 6: Final answer
    x = 7,739.76

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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.