Home / 13,937.48-20,905.80-3,549.20

Finding the Fourth Proportional to 13,937.48, 20,905.80 and 3,549.20

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Solution

The fourth proportional to 13,937.48, 20,905.80 and 3,549.20 is: 5,323.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.48 : 20,905.80 = 3,549.20 : x
  2. Step 2: Convert to fraction form
    13,937.48/20,905.80 = 3,549.20/x
  3. Step 3: Cross multiply
    13,937.48x = 20,905.80 × 3,549.20
  4. Step 4: Simplify right side
    13,937.48x = 74,198,865.36
  5. Step 5: Solve for x
    x = 74,198,865.36/13,937.48
  6. Step 6: Final answer
    x = 5,323.69

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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.