Home / 21,729.47-32,594.21-13,987.49

Finding the Fourth Proportional to 21,729.47, 32,594.21 and 13,987.49

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Solution

The fourth proportional to 21,729.47, 32,594.21 and 13,987.49 is: 20,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.47 : 32,594.21 = 13,987.49 : x
  2. Step 2: Convert to fraction form
    21,729.47/32,594.21 = 13,987.49/x
  3. Step 3: Cross multiply
    21,729.47x = 32,594.21 × 13,987.49
  4. Step 4: Simplify right side
    21,729.47x = 455,911,250.43
  5. Step 5: Solve for x
    x = 455,911,250.43/21,729.47
  6. Step 6: Final answer
    x = 20,981.24

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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.