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Finding the Fourth Proportional to 32,868.72, 45,362.16 and 18,722.88

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Solution

The fourth proportional to 32,868.72, 45,362.16 and 18,722.88 is: 25,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,868.72 : 45,362.16 = 18,722.88 : x
  2. Step 2: Convert to fraction form
    32,868.72/45,362.16 = 18,722.88/x
  3. Step 3: Cross multiply
    32,868.72x = 45,362.16 × 18,722.88
  4. Step 4: Simplify right side
    32,868.72x = 849,310,278.22
  5. Step 5: Solve for x
    x = 849,310,278.22/32,868.72
  6. Step 6: Final answer
    x = 25,839.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.