Home / 13,868.80-20,809.76-6,948.16

Finding the Fourth Proportional to 13,868.80, 20,809.76 and 6,948.16

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Solution

The fourth proportional to 13,868.80, 20,809.76 and 6,948.16 is: 10,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.80 : 20,809.76 = 6,948.16 : x
  2. Step 2: Convert to fraction form
    13,868.80/20,809.76 = 6,948.16/x
  3. Step 3: Cross multiply
    13,868.80x = 20,809.76 × 6,948.16
  4. Step 4: Simplify right side
    13,868.80x = 144,589,542.04
  5. Step 5: Solve for x
    x = 144,589,542.04/13,868.80
  6. Step 6: Final answer
    x = 10,425.53

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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.