Home / 12,170.79-16,790.36-7,132.46

Finding the Fourth Proportional to 12,170.79, 16,790.36 and 7,132.46

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Solution

The fourth proportional to 12,170.79, 16,790.36 and 7,132.46 is: 9,839.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.79 : 16,790.36 = 7,132.46 : x
  2. Step 2: Convert to fraction form
    12,170.79/16,790.36 = 7,132.46/x
  3. Step 3: Cross multiply
    12,170.79x = 16,790.36 × 7,132.46
  4. Step 4: Simplify right side
    12,170.79x = 119,756,451.47
  5. Step 5: Solve for x
    x = 119,756,451.47/12,170.79
  6. Step 6: Final answer
    x = 9,839.66

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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.