Home / 11,478.74-15,839.80-6,374.55

Finding the Fourth Proportional to 11,478.74, 15,839.80 and 6,374.55

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Solution

The fourth proportional to 11,478.74, 15,839.80 and 6,374.55 is: 8,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.74 : 15,839.80 = 6,374.55 : x
  2. Step 2: Convert to fraction form
    11,478.74/15,839.80 = 6,374.55/x
  3. Step 3: Cross multiply
    11,478.74x = 15,839.80 × 6,374.55
  4. Step 4: Simplify right side
    11,478.74x = 100,971,542.76
  5. Step 5: Solve for x
    x = 100,971,542.76/11,478.74
  6. Step 6: Final answer
    x = 8,796.39

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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.