Home / 10,145.14-15,217.70-6,657.21

Finding the Fourth Proportional to 10,145.14, 15,217.70 and 6,657.21

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Solution

The fourth proportional to 10,145.14, 15,217.70 and 6,657.21 is: 9,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.14 : 15,217.70 = 6,657.21 : x
  2. Step 2: Convert to fraction form
    10,145.14/15,217.70 = 6,657.21/x
  3. Step 3: Cross multiply
    10,145.14x = 15,217.70 × 6,657.21
  4. Step 4: Simplify right side
    10,145.14x = 101,307,424.62
  5. Step 5: Solve for x
    x = 101,307,424.62/10,145.14
  6. Step 6: Final answer
    x = 9,985.81

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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.