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Finding the Fourth Proportional to 21,750.72, 32,630.16 and 6,955.65

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Solution

The fourth proportional to 21,750.72, 32,630.16 and 6,955.65 is: 10,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.72 : 32,630.16 = 6,955.65 : x
  2. Step 2: Convert to fraction form
    21,750.72/32,630.16 = 6,955.65/x
  3. Step 3: Cross multiply
    21,750.72x = 32,630.16 × 6,955.65
  4. Step 4: Simplify right side
    21,750.72x = 226,963,972.40
  5. Step 5: Solve for x
    x = 226,963,972.40/21,750.72
  6. Step 6: Final answer
    x = 10,434.78

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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.