Home / 40,679.16-61,020.90-12,975

Finding the Fourth Proportional to 40,679.16, 61,020.90 and 12,975

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Solution

The fourth proportional to 40,679.16, 61,020.90 and 12,975 is: 19,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,679.16 : 61,020.90 = 12,975 : x
  2. Step 2: Convert to fraction form
    40,679.16/61,020.90 = 12,975/x
  3. Step 3: Cross multiply
    40,679.16x = 61,020.90 × 12,975
  4. Step 4: Simplify right side
    40,679.16x = 791,746,177.50
  5. Step 5: Solve for x
    x = 791,746,177.50/40,679.16
  6. Step 6: Final answer
    x = 19,463.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.