Home / 21,729.66-32,594.49-13,987.68

Finding the Fourth Proportional to 21,729.66, 32,594.49 and 13,987.68

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Solution

The fourth proportional to 21,729.66, 32,594.49 and 13,987.68 is: 20,981.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.66 : 32,594.49 = 13,987.68 : x
  2. Step 2: Convert to fraction form
    21,729.66/32,594.49 = 13,987.68/x
  3. Step 3: Cross multiply
    21,729.66x = 32,594.49 × 13,987.68
  4. Step 4: Simplify right side
    21,729.66x = 455,921,295.88
  5. Step 5: Solve for x
    x = 455,921,295.88/21,729.66
  6. Step 6: Final answer
    x = 20,981.52

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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.