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Finding the Fourth Proportional to 21,953.61, 32,930.42 and 10,275.03

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Solution

The fourth proportional to 21,953.61, 32,930.42 and 10,275.03 is: 15,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.61 : 32,930.42 = 10,275.03 : x
  2. Step 2: Convert to fraction form
    21,953.61/32,930.42 = 10,275.03/x
  3. Step 3: Cross multiply
    21,953.61x = 32,930.42 × 10,275.03
  4. Step 4: Simplify right side
    21,953.61x = 338,361,002.04
  5. Step 5: Solve for x
    x = 338,361,002.04/21,953.61
  6. Step 6: Final answer
    x = 15,412.55

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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.