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Finding the Fourth Proportional to 21,752.80, 32,604.90 and 9,270.70

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Solution

The fourth proportional to 21,752.80, 32,604.90 and 9,270.70 is: 13,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.80 : 32,604.90 = 9,270.70 : x
  2. Step 2: Convert to fraction form
    21,752.80/32,604.90 = 9,270.70/x
  3. Step 3: Cross multiply
    21,752.80x = 32,604.90 × 9,270.70
  4. Step 4: Simplify right side
    21,752.80x = 302,270,246.43
  5. Step 5: Solve for x
    x = 302,270,246.43/21,752.80
  6. Step 6: Final answer
    x = 13,895.69

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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.