Home / 13,437.64-20,156.40-5,115.70

Finding the Fourth Proportional to 13,437.64, 20,156.40 and 5,115.70

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Solution

The fourth proportional to 13,437.64, 20,156.40 and 5,115.70 is: 7,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.64 : 20,156.40 = 5,115.70 : x
  2. Step 2: Convert to fraction form
    13,437.64/20,156.40 = 5,115.70/x
  3. Step 3: Cross multiply
    13,437.64x = 20,156.40 × 5,115.70
  4. Step 4: Simplify right side
    13,437.64x = 103,114,095.48
  5. Step 5: Solve for x
    x = 103,114,095.48/13,437.64
  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.