Home / 9,972.65-13,768.16-8,865.59

Finding the Fourth Proportional to 9,972.65, 13,768.16 and 8,865.59

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Solution

The fourth proportional to 9,972.65, 13,768.16 and 8,865.59 is: 12,239.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,972.65 : 13,768.16 = 8,865.59 : x
  2. Step 2: Convert to fraction form
    9,972.65/13,768.16 = 8,865.59/x
  3. Step 3: Cross multiply
    9,972.65x = 13,768.16 × 8,865.59
  4. Step 4: Simplify right side
    9,972.65x = 122,062,861.61
  5. Step 5: Solve for x
    x = 122,062,861.61/9,972.65
  6. Step 6: Final answer
    x = 12,239.76

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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.