Home / 10,186.62-15,270.81-6,478.44

Finding the Fourth Proportional to 10,186.62, 15,270.81 and 6,478.44

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Solution

The fourth proportional to 10,186.62, 15,270.81 and 6,478.44 is: 9,711.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.62 : 15,270.81 = 6,478.44 : x
  2. Step 2: Convert to fraction form
    10,186.62/15,270.81 = 6,478.44/x
  3. Step 3: Cross multiply
    10,186.62x = 15,270.81 × 6,478.44
  4. Step 4: Simplify right side
    10,186.62x = 98,931,026.34
  5. Step 5: Solve for x
    x = 98,931,026.34/10,186.62
  6. Step 6: Final answer
    x = 9,711.86

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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.