Home / 13,780.06-20,657.73-5,454.47

Finding the Fourth Proportional to 13,780.06, 20,657.73 and 5,454.47

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Solution

The fourth proportional to 13,780.06, 20,657.73 and 5,454.47 is: 8,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.06 : 20,657.73 = 5,454.47 : x
  2. Step 2: Convert to fraction form
    13,780.06/20,657.73 = 5,454.47/x
  3. Step 3: Cross multiply
    13,780.06x = 20,657.73 × 5,454.47
  4. Step 4: Simplify right side
    13,780.06x = 112,676,968.55
  5. Step 5: Solve for x
    x = 112,676,968.55/13,780.06
  6. Step 6: Final answer
    x = 8,176.81

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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.