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Finding the Fourth Proportional to 15,769.70, 23,654.55 and 15,539.30

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Solution

The fourth proportional to 15,769.70, 23,654.55 and 15,539.30 is: 23,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.70 : 23,654.55 = 15,539.30 : x
  2. Step 2: Convert to fraction form
    15,769.70/23,654.55 = 15,539.30/x
  3. Step 3: Cross multiply
    15,769.70x = 23,654.55 × 15,539.30
  4. Step 4: Simplify right side
    15,769.70x = 367,575,148.82
  5. Step 5: Solve for x
    x = 367,575,148.82/15,769.70
  6. Step 6: Final answer
    x = 23,308.95

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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.