Home / 13,591.20-18,738.49-8,802.68

Finding the Fourth Proportional to 13,591.20, 18,738.49 and 8,802.68

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Solution

The fourth proportional to 13,591.20, 18,738.49 and 8,802.68 is: 12,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.20 : 18,738.49 = 8,802.68 : x
  2. Step 2: Convert to fraction form
    13,591.20/18,738.49 = 8,802.68/x
  3. Step 3: Cross multiply
    13,591.20x = 18,738.49 × 8,802.68
  4. Step 4: Simplify right side
    13,591.20x = 164,948,931.15
  5. Step 5: Solve for x
    x = 164,948,931.15/13,591.20
  6. Step 6: Final answer
    x = 12,136.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.