Home / 13,153.38-18,152.20-7,564.38

Finding the Fourth Proportional to 13,153.38, 18,152.20 and 7,564.38

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Solution

The fourth proportional to 13,153.38, 18,152.20 and 7,564.38 is: 10,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.38 : 18,152.20 = 7,564.38 : x
  2. Step 2: Convert to fraction form
    13,153.38/18,152.20 = 7,564.38/x
  3. Step 3: Cross multiply
    13,153.38x = 18,152.20 × 7,564.38
  4. Step 4: Simplify right side
    13,153.38x = 137,310,138.64
  5. Step 5: Solve for x
    x = 137,310,138.64/13,153.38
  6. Step 6: Final answer
    x = 10,439.15

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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.