Home / 11,152.55-15,390.45-6,116.78

Finding the Fourth Proportional to 11,152.55, 15,390.45 and 6,116.78

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Solution

The fourth proportional to 11,152.55, 15,390.45 and 6,116.78 is: 8,441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.55 : 15,390.45 = 6,116.78 : x
  2. Step 2: Convert to fraction form
    11,152.55/15,390.45 = 6,116.78/x
  3. Step 3: Cross multiply
    11,152.55x = 15,390.45 × 6,116.78
  4. Step 4: Simplify right side
    11,152.55x = 94,139,919.80
  5. Step 5: Solve for x
    x = 94,139,919.80/11,152.55
  6. Step 6: Final answer
    x = 8,441.12

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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.