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Finding the Fourth Proportional to 15,031.59, 20,744.34 and 9,065.19

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Solution

The fourth proportional to 15,031.59, 20,744.34 and 9,065.19 is: 12,510.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.59 : 20,744.34 = 9,065.19 : x
  2. Step 2: Convert to fraction form
    15,031.59/20,744.34 = 9,065.19/x
  3. Step 3: Cross multiply
    15,031.59x = 20,744.34 × 9,065.19
  4. Step 4: Simplify right side
    15,031.59x = 188,051,383.52
  5. Step 5: Solve for x
    x = 188,051,383.52/15,031.59
  6. Step 6: Final answer
    x = 12,510.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.