Home / 28,590.40-39,442.32-17,963.20

Finding the Fourth Proportional to 28,590.40, 39,442.32 and 17,963.20

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Solution

The fourth proportional to 28,590.40, 39,442.32 and 17,963.20 is: 24,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.40 : 39,442.32 = 17,963.20 : x
  2. Step 2: Convert to fraction form
    28,590.40/39,442.32 = 17,963.20/x
  3. Step 3: Cross multiply
    28,590.40x = 39,442.32 × 17,963.20
  4. Step 4: Simplify right side
    28,590.40x = 708,510,282.62
  5. Step 5: Solve for x
    x = 708,510,282.62/28,590.40
  6. Step 6: Final answer
    x = 24,781.41

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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.