Home / 11,152.60-15,390.78-6,116.80

Finding the Fourth Proportional to 11,152.60, 15,390.78 and 6,116.80

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Solution

The fourth proportional to 11,152.60, 15,390.78 and 6,116.80 is: 8,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.60 : 15,390.78 = 6,116.80 : x
  2. Step 2: Convert to fraction form
    11,152.60/15,390.78 = 6,116.80/x
  3. Step 3: Cross multiply
    11,152.60x = 15,390.78 × 6,116.80
  4. Step 4: Simplify right side
    11,152.60x = 94,142,323.10
  5. Step 5: Solve for x
    x = 94,142,323.10/11,152.60
  6. Step 6: Final answer
    x = 8,441.29

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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.