Home / 13,434.94-20,152.61-5,115.42

Finding the Fourth Proportional to 13,434.94, 20,152.61 and 5,115.42

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Solution

The fourth proportional to 13,434.94, 20,152.61 and 5,115.42 is: 7,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.94 : 20,152.61 = 5,115.42 : x
  2. Step 2: Convert to fraction form
    13,434.94/20,152.61 = 5,115.42/x
  3. Step 3: Cross multiply
    13,434.94x = 20,152.61 × 5,115.42
  4. Step 4: Simplify right side
    13,434.94x = 103,088,963.84
  5. Step 5: Solve for x
    x = 103,088,963.84/13,434.94
  6. Step 6: Final answer
    x = 7,673.20

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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.