Home / 21,839.20-32,758.80-14,927.20

Finding the Fourth Proportional to 21,839.20, 32,758.80 and 14,927.20

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Solution

The fourth proportional to 21,839.20, 32,758.80 and 14,927.20 is: 22,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.20 : 32,758.80 = 14,927.20 : x
  2. Step 2: Convert to fraction form
    21,839.20/32,758.80 = 14,927.20/x
  3. Step 3: Cross multiply
    21,839.20x = 32,758.80 × 14,927.20
  4. Step 4: Simplify right side
    21,839.20x = 488,997,159.36
  5. Step 5: Solve for x
    x = 488,997,159.36/21,839.20
  6. Step 6: Final answer
    x = 22,390.80

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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.