Home / 12,490.39-17,207.47-8,706.68

Finding the Fourth Proportional to 12,490.39, 17,207.47 and 8,706.68

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Solution

The fourth proportional to 12,490.39, 17,207.47 and 8,706.68 is: 11,994.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.39 : 17,207.47 = 8,706.68 : x
  2. Step 2: Convert to fraction form
    12,490.39/17,207.47 = 8,706.68/x
  3. Step 3: Cross multiply
    12,490.39x = 17,207.47 × 8,706.68
  4. Step 4: Simplify right side
    12,490.39x = 149,819,934.90
  5. Step 5: Solve for x
    x = 149,819,934.90/12,490.39
  6. Step 6: Final answer
    x = 11,994.82

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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.