Home / 20,932.32-28,885.56-11,501.04

Finding the Fourth Proportional to 20,932.32, 28,885.56 and 11,501.04

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Solution

The fourth proportional to 20,932.32, 28,885.56 and 11,501.04 is: 15,870.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.32 : 28,885.56 = 11,501.04 : x
  2. Step 2: Convert to fraction form
    20,932.32/28,885.56 = 11,501.04/x
  3. Step 3: Cross multiply
    20,932.32x = 28,885.56 × 11,501.04
  4. Step 4: Simplify right side
    20,932.32x = 332,213,980.98
  5. Step 5: Solve for x
    x = 332,213,980.98/20,932.32
  6. Step 6: Final answer
    x = 15,870.86

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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.