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Finding the Fourth Proportional to 21,988.55, 32,975.99 and 7,194.18

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Solution

The fourth proportional to 21,988.55, 32,975.99 and 7,194.18 is: 10,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.55 : 32,975.99 = 7,194.18 : x
  2. Step 2: Convert to fraction form
    21,988.55/32,975.99 = 7,194.18/x
  3. Step 3: Cross multiply
    21,988.55x = 32,975.99 × 7,194.18
  4. Step 4: Simplify right side
    21,988.55x = 237,235,207.74
  5. Step 5: Solve for x
    x = 237,235,207.74/21,988.55
  6. Step 6: Final answer
    x = 10,789.03

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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.