Home / 13,437.60-20,156.42-5,115.68

Finding the Fourth Proportional to 13,437.60, 20,156.42 and 5,115.68

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Solution

The fourth proportional to 13,437.60, 20,156.42 and 5,115.68 is: 7,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.60 : 20,156.42 = 5,115.68 : x
  2. Step 2: Convert to fraction form
    13,437.60/20,156.42 = 5,115.68/x
  3. Step 3: Cross multiply
    13,437.60x = 20,156.42 × 5,115.68
  4. Step 4: Simplify right side
    13,437.60x = 103,113,794.67
  5. Step 5: Solve for x
    x = 103,113,794.67/13,437.60
  6. Step 6: Final answer
    x = 7,673.53

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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.