Home / 20,712.51-31,002.75-16,505.10

Finding the Fourth Proportional to 20,712.51, 31,002.75 and 16,505.10

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Solution

The fourth proportional to 20,712.51, 31,002.75 and 16,505.10 is: 24,705.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.51 : 31,002.75 = 16,505.10 : x
  2. Step 2: Convert to fraction form
    20,712.51/31,002.75 = 16,505.10/x
  3. Step 3: Cross multiply
    20,712.51x = 31,002.75 × 16,505.10
  4. Step 4: Simplify right side
    20,712.51x = 511,703,489.03
  5. Step 5: Solve for x
    x = 511,703,489.03/20,712.51
  6. Step 6: Final answer
    x = 24,705.04

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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.