Home / 12,438.59-17,159.13-9,241.70

Finding the Fourth Proportional to 12,438.59, 17,159.13 and 9,241.70

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Solution

The fourth proportional to 12,438.59, 17,159.13 and 9,241.70 is: 12,748.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.59 : 17,159.13 = 9,241.70 : x
  2. Step 2: Convert to fraction form
    12,438.59/17,159.13 = 9,241.70/x
  3. Step 3: Cross multiply
    12,438.59x = 17,159.13 × 9,241.70
  4. Step 4: Simplify right side
    12,438.59x = 158,579,445.93
  5. Step 5: Solve for x
    x = 158,579,445.93/12,438.59
  6. Step 6: Final answer
    x = 12,748.99

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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.