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Finding the Fourth Proportional to 32,902.80, 49,329.90 and 18,128.40

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Solution

The fourth proportional to 32,902.80, 49,329.90 and 18,128.40 is: 27,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,902.80 : 49,329.90 = 18,128.40 : x
  2. Step 2: Convert to fraction form
    32,902.80/49,329.90 = 18,128.40/x
  3. Step 3: Cross multiply
    32,902.80x = 49,329.90 × 18,128.40
  4. Step 4: Simplify right side
    32,902.80x = 894,272,159.16
  5. Step 5: Solve for x
    x = 894,272,159.16/32,902.80
  6. Step 6: Final answer
    x = 27,179.21

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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.