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Finding the Fourth Proportional to 12,549.90, 17,318.49 and 7,098.40

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Solution

The fourth proportional to 12,549.90, 17,318.49 and 7,098.40 is: 9,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.90 : 17,318.49 = 7,098.40 : x
  2. Step 2: Convert to fraction form
    12,549.90/17,318.49 = 7,098.40/x
  3. Step 3: Cross multiply
    12,549.90x = 17,318.49 × 7,098.40
  4. Step 4: Simplify right side
    12,549.90x = 122,933,482.82
  5. Step 5: Solve for x
    x = 122,933,482.82/12,549.90
  6. Step 6: Final answer
    x = 9,795.57

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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.