Home / 28,535.20-39,403.60-17,943.20

Finding the Fourth Proportional to 28,535.20, 39,403.60 and 17,943.20

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Solution

The fourth proportional to 28,535.20, 39,403.60 and 17,943.20 is: 24,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.20 : 39,403.60 = 17,943.20 : x
  2. Step 2: Convert to fraction form
    28,535.20/39,403.60 = 17,943.20/x
  3. Step 3: Cross multiply
    28,535.20x = 39,403.60 × 17,943.20
  4. Step 4: Simplify right side
    28,535.20x = 707,026,675.52
  5. Step 5: Solve for x
    x = 707,026,675.52/28,535.20
  6. Step 6: Final answer
    x = 24,777.35

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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.