Home / 13,920.32-20,881.68-3,532.07

Finding the Fourth Proportional to 13,920.32, 20,881.68 and 3,532.07

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Solution

The fourth proportional to 13,920.32, 20,881.68 and 3,532.07 is: 5,298.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.32 : 20,881.68 = 3,532.07 : x
  2. Step 2: Convert to fraction form
    13,920.32/20,881.68 = 3,532.07/x
  3. Step 3: Cross multiply
    13,920.32x = 20,881.68 × 3,532.07
  4. Step 4: Simplify right side
    13,920.32x = 73,755,555.48
  5. Step 5: Solve for x
    x = 73,755,555.48/13,920.32
  6. Step 6: Final answer
    x = 5,298.41

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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.