Home / 12,711.15-17,549.91-7,938.36

Finding the Fourth Proportional to 12,711.15, 17,549.91 and 7,938.36

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Solution

The fourth proportional to 12,711.15, 17,549.91 and 7,938.36 is: 10,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.15 : 17,549.91 = 7,938.36 : x
  2. Step 2: Convert to fraction form
    12,711.15/17,549.91 = 7,938.36/x
  3. Step 3: Cross multiply
    12,711.15x = 17,549.91 × 7,938.36
  4. Step 4: Simplify right side
    12,711.15x = 139,317,503.55
  5. Step 5: Solve for x
    x = 139,317,503.55/12,711.15
  6. Step 6: Final answer
    x = 10,960.26

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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.