Home / 13,370.78-20,034.30-7,124.16

Finding the Fourth Proportional to 13,370.78, 20,034.30 and 7,124.16

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Solution

The fourth proportional to 13,370.78, 20,034.30 and 7,124.16 is: 10,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.78 : 20,034.30 = 7,124.16 : x
  2. Step 2: Convert to fraction form
    13,370.78/20,034.30 = 7,124.16/x
  3. Step 3: Cross multiply
    13,370.78x = 20,034.30 × 7,124.16
  4. Step 4: Simplify right side
    13,370.78x = 142,727,660.53
  5. Step 5: Solve for x
    x = 142,727,660.53/13,370.78
  6. Step 6: Final answer
    x = 10,674.59

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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.