Home / 15,174.93-20,933.96-10,140.38

Finding the Fourth Proportional to 15,174.93, 20,933.96 and 10,140.38

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Solution

The fourth proportional to 15,174.93, 20,933.96 and 10,140.38 is: 13,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.93 : 20,933.96 = 10,140.38 : x
  2. Step 2: Convert to fraction form
    15,174.93/20,933.96 = 10,140.38/x
  3. Step 3: Cross multiply
    15,174.93x = 20,933.96 × 10,140.38
  4. Step 4: Simplify right side
    15,174.93x = 212,278,350.19
  5. Step 5: Solve for x
    x = 212,278,350.19/15,174.93
  6. Step 6: Final answer
    x = 13,988.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.