Home / 20,445.64-28,215.46-11,371.08

Finding the Fourth Proportional to 20,445.64, 28,215.46 and 11,371.08

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Solution

The fourth proportional to 20,445.64, 28,215.46 and 11,371.08 is: 15,692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.64 : 28,215.46 = 11,371.08 : x
  2. Step 2: Convert to fraction form
    20,445.64/28,215.46 = 11,371.08/x
  3. Step 3: Cross multiply
    20,445.64x = 28,215.46 × 11,371.08
  4. Step 4: Simplify right side
    20,445.64x = 320,840,252.90
  5. Step 5: Solve for x
    x = 320,840,252.90/20,445.64
  6. Step 6: Final answer
    x = 15,692.36

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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.