Home / 13,432.06-20,139.45-8,809.66

Finding the Fourth Proportional to 13,432.06, 20,139.45 and 8,809.66

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Solution

The fourth proportional to 13,432.06, 20,139.45 and 8,809.66 is: 13,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.06 : 20,139.45 = 8,809.66 : x
  2. Step 2: Convert to fraction form
    13,432.06/20,139.45 = 8,809.66/x
  3. Step 3: Cross multiply
    13,432.06x = 20,139.45 × 8,809.66
  4. Step 4: Simplify right side
    13,432.06x = 177,421,707.09
  5. Step 5: Solve for x
    x = 177,421,707.09/13,432.06
  6. Step 6: Final answer
    x = 13,208.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.