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Finding the Fourth Proportional to 21,952.80, 32,929.20 and 14,079.60

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Solution

The fourth proportional to 21,952.80, 32,929.20 and 14,079.60 is: 21,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.80 : 32,929.20 = 14,079.60 : x
  2. Step 2: Convert to fraction form
    21,952.80/32,929.20 = 14,079.60/x
  3. Step 3: Cross multiply
    21,952.80x = 32,929.20 × 14,079.60
  4. Step 4: Simplify right side
    21,952.80x = 463,629,964.32
  5. Step 5: Solve for x
    x = 463,629,964.32/21,952.80
  6. Step 6: Final answer
    x = 21,119.40

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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.