Home / 21,981.51-32,988.60-13,673.61

Finding the Fourth Proportional to 21,981.51, 32,988.60 and 13,673.61

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Solution

The fourth proportional to 21,981.51, 32,988.60 and 13,673.61 is: 20,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.51 : 32,988.60 = 13,673.61 : x
  2. Step 2: Convert to fraction form
    21,981.51/32,988.60 = 13,673.61/x
  3. Step 3: Cross multiply
    21,981.51x = 32,988.60 × 13,673.61
  4. Step 4: Simplify right side
    21,981.51x = 451,073,250.85
  5. Step 5: Solve for x
    x = 451,073,250.85/21,981.51
  6. Step 6: Final answer
    x = 20,520.58

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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.