Home / 12,715.98-17,549.55-7,125.90

Finding the Fourth Proportional to 12,715.98, 17,549.55 and 7,125.90

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Solution

The fourth proportional to 12,715.98, 17,549.55 and 7,125.90 is: 9,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.98 : 17,549.55 = 7,125.90 : x
  2. Step 2: Convert to fraction form
    12,715.98/17,549.55 = 7,125.90/x
  3. Step 3: Cross multiply
    12,715.98x = 17,549.55 × 7,125.90
  4. Step 4: Simplify right side
    12,715.98x = 125,056,338.35
  5. Step 5: Solve for x
    x = 125,056,338.35/12,715.98
  6. Step 6: Final answer
    x = 9,834.58

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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.