Home / 20,597.31-28,424.48-11,165.90

Finding the Fourth Proportional to 20,597.31, 28,424.48 and 11,165.90

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Solution

The fourth proportional to 20,597.31, 28,424.48 and 11,165.90 is: 15,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.31 : 28,424.48 = 11,165.90 : x
  2. Step 2: Convert to fraction form
    20,597.31/28,424.48 = 11,165.90/x
  3. Step 3: Cross multiply
    20,597.31x = 28,424.48 × 11,165.90
  4. Step 4: Simplify right side
    20,597.31x = 317,384,703.28
  5. Step 5: Solve for x
    x = 317,384,703.28/20,597.31
  6. Step 6: Final answer
    x = 15,409.04

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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.