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Finding the Fourth Proportional to 21,959.48, 32,972.03 and 21,631.43

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Solution

The fourth proportional to 21,959.48, 32,972.03 and 21,631.43 is: 32,479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.48 : 32,972.03 = 21,631.43 : x
  2. Step 2: Convert to fraction form
    21,959.48/32,972.03 = 21,631.43/x
  3. Step 3: Cross multiply
    21,959.48x = 32,972.03 × 21,631.43
  4. Step 4: Simplify right side
    21,959.48x = 713,232,214.29
  5. Step 5: Solve for x
    x = 713,232,214.29/21,959.48
  6. Step 6: Final answer
    x = 32,479.46

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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.