Home / 28,654.29-42,990.23-13,680.51

Finding the Fourth Proportional to 28,654.29, 42,990.23 and 13,680.51

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Solution

The fourth proportional to 28,654.29, 42,990.23 and 13,680.51 is: 20,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.29 : 42,990.23 = 13,680.51 : x
  2. Step 2: Convert to fraction form
    28,654.29/42,990.23 = 13,680.51/x
  3. Step 3: Cross multiply
    28,654.29x = 42,990.23 × 13,680.51
  4. Step 4: Simplify right side
    28,654.29x = 588,128,271.42
  5. Step 5: Solve for x
    x = 588,128,271.42/28,654.29
  6. Step 6: Final answer
    x = 20,524.96

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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.