Home / 13,608.06-18,780.48-8,306.46

Finding the Fourth Proportional to 13,608.06, 18,780.48 and 8,306.46

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Solution

The fourth proportional to 13,608.06, 18,780.48 and 8,306.46 is: 11,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.06 : 18,780.48 = 8,306.46 : x
  2. Step 2: Convert to fraction form
    13,608.06/18,780.48 = 8,306.46/x
  3. Step 3: Cross multiply
    13,608.06x = 18,780.48 × 8,306.46
  4. Step 4: Simplify right side
    13,608.06x = 155,999,305.90
  5. Step 5: Solve for x
    x = 155,999,305.90/13,608.06
  6. Step 6: Final answer
    x = 11,463.74

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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.