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Finding the Fourth Proportional to 32,642.40, 48,979.80 and 18,613.20

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Solution

The fourth proportional to 32,642.40, 48,979.80 and 18,613.20 is: 27,929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,642.40 : 48,979.80 = 18,613.20 : x
  2. Step 2: Convert to fraction form
    32,642.40/48,979.80 = 18,613.20/x
  3. Step 3: Cross multiply
    32,642.40x = 48,979.80 × 18,613.20
  4. Step 4: Simplify right side
    32,642.40x = 911,670,813.36
  5. Step 5: Solve for x
    x = 911,670,813.36/32,642.40
  6. Step 6: Final answer
    x = 27,929.04

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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.