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Finding the Fourth Proportional to 25,779.62, 38,658.48 and 9,143.84

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Solution

The fourth proportional to 25,779.62, 38,658.48 and 9,143.84 is: 13,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,779.62 : 38,658.48 = 9,143.84 : x
  2. Step 2: Convert to fraction form
    25,779.62/38,658.48 = 9,143.84/x
  3. Step 3: Cross multiply
    25,779.62x = 38,658.48 × 9,143.84
  4. Step 4: Simplify right side
    25,779.62x = 353,486,762.47
  5. Step 5: Solve for x
    x = 353,486,762.47/25,779.62
  6. Step 6: Final answer
    x = 13,711.87

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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.