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Finding the Fourth Proportional to 21,392.68, 32,080.80 and 7,350.08

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Solution

The fourth proportional to 21,392.68, 32,080.80 and 7,350.08 is: 11,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.68 : 32,080.80 = 7,350.08 : x
  2. Step 2: Convert to fraction form
    21,392.68/32,080.80 = 7,350.08/x
  3. Step 3: Cross multiply
    21,392.68x = 32,080.80 × 7,350.08
  4. Step 4: Simplify right side
    21,392.68x = 235,796,446.46
  5. Step 5: Solve for x
    x = 235,796,446.46/21,392.68
  6. Step 6: Final answer
    x = 11,022.30

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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.