Home / 28,483.20-39,306.96-20,527.92

Finding the Fourth Proportional to 28,483.20, 39,306.96 and 20,527.92

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Solution

The fourth proportional to 28,483.20, 39,306.96 and 20,527.92 is: 28,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.20 : 39,306.96 = 20,527.92 : x
  2. Step 2: Convert to fraction form
    28,483.20/39,306.96 = 20,527.92/x
  3. Step 3: Cross multiply
    28,483.20x = 39,306.96 × 20,527.92
  4. Step 4: Simplify right side
    28,483.20x = 806,890,130.32
  5. Step 5: Solve for x
    x = 806,890,130.32/28,483.20
  6. Step 6: Final answer
    x = 28,328.63

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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.