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Finding the Fourth Proportional to 15,761, 21,752.34 and 10,170.92

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Solution

The fourth proportional to 15,761, 21,752.34 and 10,170.92 is: 14,037.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761 : 21,752.34 = 10,170.92 : x
  2. Step 2: Convert to fraction form
    15,761/21,752.34 = 10,170.92/x
  3. Step 3: Cross multiply
    15,761x = 21,752.34 × 10,170.92
  4. Step 4: Simplify right side
    15,761x = 221,241,309.95
  5. Step 5: Solve for x
    x = 221,241,309.95/15,761
  6. Step 6: Final answer
    x = 14,037.26

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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.