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Finding the Fourth Proportional to 32,128.80, 48,160.80 and 18,974.40

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Solution

The fourth proportional to 32,128.80, 48,160.80 and 18,974.40 is: 28,442.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,128.80 : 48,160.80 = 18,974.40 : x
  2. Step 2: Convert to fraction form
    32,128.80/48,160.80 = 18,974.40/x
  3. Step 3: Cross multiply
    32,128.80x = 48,160.80 × 18,974.40
  4. Step 4: Simplify right side
    32,128.80x = 913,822,283.52
  5. Step 5: Solve for x
    x = 913,822,283.52/32,128.80
  6. Step 6: Final answer
    x = 28,442.47

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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.