Home / 20,750.31-28,635.52-11,319.07

Finding the Fourth Proportional to 20,750.31, 28,635.52 and 11,319.07

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Solution

The fourth proportional to 20,750.31, 28,635.52 and 11,319.07 is: 15,620.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.31 : 28,635.52 = 11,319.07 : x
  2. Step 2: Convert to fraction form
    20,750.31/28,635.52 = 11,319.07/x
  3. Step 3: Cross multiply
    20,750.31x = 28,635.52 × 11,319.07
  4. Step 4: Simplify right side
    20,750.31x = 324,127,398.77
  5. Step 5: Solve for x
    x = 324,127,398.77/20,750.31
  6. Step 6: Final answer
    x = 15,620.36

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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.