Home / 20,590.10-28,414.44-11,158.64

Finding the Fourth Proportional to 20,590.10, 28,414.44 and 11,158.64

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Solution

The fourth proportional to 20,590.10, 28,414.44 and 11,158.64 is: 15,398.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.10 : 28,414.44 = 11,158.64 : x
  2. Step 2: Convert to fraction form
    20,590.10/28,414.44 = 11,158.64/x
  3. Step 3: Cross multiply
    20,590.10x = 28,414.44 × 11,158.64
  4. Step 4: Simplify right side
    20,590.10x = 317,066,506.76
  5. Step 5: Solve for x
    x = 317,066,506.76/20,590.10
  6. Step 6: Final answer
    x = 15,398.98

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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.