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Finding the Fourth Proportional to 10,142.70, 15,214.05 and 8,846.70

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Solution

The fourth proportional to 10,142.70, 15,214.05 and 8,846.70 is: 13,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.70 : 15,214.05 = 8,846.70 : x
  2. Step 2: Convert to fraction form
    10,142.70/15,214.05 = 8,846.70/x
  3. Step 3: Cross multiply
    10,142.70x = 15,214.05 × 8,846.70
  4. Step 4: Simplify right side
    10,142.70x = 134,594,136.14
  5. Step 5: Solve for x
    x = 134,594,136.14/10,142.70
  6. Step 6: Final answer
    x = 13,270.05

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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.