Home / 10,853.44-16,280.15-7,128.74

Finding the Fourth Proportional to 10,853.44, 16,280.15 and 7,128.74

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Solution

The fourth proportional to 10,853.44, 16,280.15 and 7,128.74 is: 10,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,853.44 : 16,280.15 = 7,128.74 : x
  2. Step 2: Convert to fraction form
    10,853.44/16,280.15 = 7,128.74/x
  3. Step 3: Cross multiply
    10,853.44x = 16,280.15 × 7,128.74
  4. Step 4: Simplify right side
    10,853.44x = 116,056,961.57
  5. Step 5: Solve for x
    x = 116,056,961.57/10,853.44
  6. Step 6: Final answer
    x = 10,693.11

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Double scale
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Similar ratio
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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.