Home / 16,422.75-22,706.60-15,688.35

Finding the Fourth Proportional to 16,422.75, 22,706.60 and 15,688.35

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Solution

The fourth proportional to 16,422.75, 22,706.60 and 15,688.35 is: 21,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,422.75 : 22,706.60 = 15,688.35 : x
  2. Step 2: Convert to fraction form
    16,422.75/22,706.60 = 15,688.35/x
  3. Step 3: Cross multiply
    16,422.75x = 22,706.60 × 15,688.35
  4. Step 4: Simplify right side
    16,422.75x = 356,229,009.67
  5. Step 5: Solve for x
    x = 356,229,009.67/16,422.75
  6. Step 6: Final answer
    x = 21,691.19

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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.