Home / 13,470.40-20,217.60-7,916.80

Finding the Fourth Proportional to 13,470.40, 20,217.60 and 7,916.80

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Solution

The fourth proportional to 13,470.40, 20,217.60 and 7,916.80 is: 11,882.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.40 : 20,217.60 = 7,916.80 : x
  2. Step 2: Convert to fraction form
    13,470.40/20,217.60 = 7,916.80/x
  3. Step 3: Cross multiply
    13,470.40x = 20,217.60 × 7,916.80
  4. Step 4: Simplify right side
    13,470.40x = 160,058,695.68
  5. Step 5: Solve for x
    x = 160,058,695.68/13,470.40
  6. Step 6: Final answer
    x = 11,882.25

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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.