Home / 15,871.82-23,789.70-7,429.55

Finding the Fourth Proportional to 15,871.82, 23,789.70 and 7,429.55

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Solution

The fourth proportional to 15,871.82, 23,789.70 and 7,429.55 is: 11,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.82 : 23,789.70 = 7,429.55 : x
  2. Step 2: Convert to fraction form
    15,871.82/23,789.70 = 7,429.55/x
  3. Step 3: Cross multiply
    15,871.82x = 23,789.70 × 7,429.55
  4. Step 4: Simplify right side
    15,871.82x = 176,746,646.69
  5. Step 5: Solve for x
    x = 176,746,646.69/15,871.82
  6. Step 6: Final answer
    x = 11,135.88

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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.