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Finding the Fourth Proportional to 15,781.91, 23,672.86 and 6,427.01

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Solution

The fourth proportional to 15,781.91, 23,672.86 and 6,427.01 is: 9,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.91 : 23,672.86 = 6,427.01 : x
  2. Step 2: Convert to fraction form
    15,781.91/23,672.86 = 6,427.01/x
  3. Step 3: Cross multiply
    15,781.91x = 23,672.86 × 6,427.01
  4. Step 4: Simplify right side
    15,781.91x = 152,145,751.06
  5. Step 5: Solve for x
    x = 152,145,751.06/15,781.91
  6. Step 6: Final answer
    x = 9,640.52

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1.5x scale

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.