Home / 13,437.42-20,119.16-10,140.53

Finding the Fourth Proportional to 13,437.42, 20,119.16 and 10,140.53

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Solution

The fourth proportional to 13,437.42, 20,119.16 and 10,140.53 is: 15,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.42 : 20,119.16 = 10,140.53 : x
  2. Step 2: Convert to fraction form
    13,437.42/20,119.16 = 10,140.53/x
  3. Step 3: Cross multiply
    13,437.42x = 20,119.16 × 10,140.53
  4. Step 4: Simplify right side
    13,437.42x = 204,018,794.26
  5. Step 5: Solve for x
    x = 204,018,794.26/13,437.42
  6. Step 6: Final answer
    x = 15,182.88

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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.