Home / 21,500.74-29,685.48-16,455.96

Finding the Fourth Proportional to 21,500.74, 29,685.48 and 16,455.96

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Solution

The fourth proportional to 21,500.74, 29,685.48 and 16,455.96 is: 22,720.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.74 : 29,685.48 = 16,455.96 : x
  2. Step 2: Convert to fraction form
    21,500.74/29,685.48 = 16,455.96/x
  3. Step 3: Cross multiply
    21,500.74x = 29,685.48 × 16,455.96
  4. Step 4: Simplify right side
    21,500.74x = 488,503,071.46
  5. Step 5: Solve for x
    x = 488,503,071.46/21,500.74
  6. Step 6: Final answer
    x = 22,720.29

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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.