Home / 10,143.41-15,215.11-4,220.18

Finding the Fourth Proportional to 10,143.41, 15,215.11 and 4,220.18

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Solution

The fourth proportional to 10,143.41, 15,215.11 and 4,220.18 is: 6,330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.41 : 15,215.11 = 4,220.18 : x
  2. Step 2: Convert to fraction form
    10,143.41/15,215.11 = 4,220.18/x
  3. Step 3: Cross multiply
    10,143.41x = 15,215.11 × 4,220.18
  4. Step 4: Simplify right side
    10,143.41x = 64,210,502.92
  5. Step 5: Solve for x
    x = 64,210,502.92/10,143.41
  6. Step 6: Final answer
    x = 6,330.27

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Half scale
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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.