Home / 28,291.44-39,020.28-20,734.92

Finding the Fourth Proportional to 28,291.44, 39,020.28 and 20,734.92

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Solution

The fourth proportional to 28,291.44, 39,020.28 and 20,734.92 is: 28,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.44 : 39,020.28 = 20,734.92 : x
  2. Step 2: Convert to fraction form
    28,291.44/39,020.28 = 20,734.92/x
  3. Step 3: Cross multiply
    28,291.44x = 39,020.28 × 20,734.92
  4. Step 4: Simplify right side
    28,291.44x = 809,082,384.18
  5. Step 5: Solve for x
    x = 809,082,384.18/28,291.44
  6. Step 6: Final answer
    x = 28,598.13

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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.