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Finding the Fourth Proportional to 32,718.80, 45,152.16 and 18,571.88

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Solution

The fourth proportional to 32,718.80, 45,152.16 and 18,571.88 is: 25,629.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,718.80 : 45,152.16 = 18,571.88 : x
  2. Step 2: Convert to fraction form
    32,718.80/45,152.16 = 18,571.88/x
  3. Step 3: Cross multiply
    32,718.80x = 45,152.16 × 18,571.88
  4. Step 4: Simplify right side
    32,718.80x = 838,560,497.26
  5. Step 5: Solve for x
    x = 838,560,497.26/32,718.80
  6. Step 6: Final answer
    x = 25,629.32

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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.