Home / 28,449.40-39,252.26-18,378.28

Finding the Fourth Proportional to 28,449.40, 39,252.26 and 18,378.28

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Solution

The fourth proportional to 28,449.40, 39,252.26 and 18,378.28 is: 25,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.40 : 39,252.26 = 18,378.28 : x
  2. Step 2: Convert to fraction form
    28,449.40/39,252.26 = 18,378.28/x
  3. Step 3: Cross multiply
    28,449.40x = 39,252.26 × 18,378.28
  4. Step 4: Simplify right side
    28,449.40x = 721,389,024.91
  5. Step 5: Solve for x
    x = 721,389,024.91/28,449.40
  6. Step 6: Final answer
    x = 25,356.92

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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.