Home / 13,839.74-20,762.90-4,479.76

Finding the Fourth Proportional to 13,839.74, 20,762.90 and 4,479.76

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Solution

The fourth proportional to 13,839.74, 20,762.90 and 4,479.76 is: 6,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.74 : 20,762.90 = 4,479.76 : x
  2. Step 2: Convert to fraction form
    13,839.74/20,762.90 = 4,479.76/x
  3. Step 3: Cross multiply
    13,839.74x = 20,762.90 × 4,479.76
  4. Step 4: Simplify right side
    13,839.74x = 93,012,757.00
  5. Step 5: Solve for x
    x = 93,012,757.00/13,839.74
  6. Step 6: Final answer
    x = 6,720.70

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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.