Home / 20,842.70-28,769.18-18,040.16

Finding the Fourth Proportional to 20,842.70, 28,769.18 and 18,040.16

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Solution

The fourth proportional to 20,842.70, 28,769.18 and 18,040.16 is: 24,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.70 : 28,769.18 = 18,040.16 : x
  2. Step 2: Convert to fraction form
    20,842.70/28,769.18 = 18,040.16/x
  3. Step 3: Cross multiply
    20,842.70x = 28,769.18 × 18,040.16
  4. Step 4: Simplify right side
    20,842.70x = 519,000,376.22
  5. Step 5: Solve for x
    x = 519,000,376.22/20,842.70
  6. Step 6: Final answer
    x = 24,900.83

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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.