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Finding the Fourth Proportional to 32,689.75, 45,109.95 and 18,348.25

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Solution

The fourth proportional to 32,689.75, 45,109.95 and 18,348.25 is: 25,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,689.75 : 45,109.95 = 18,348.25 : x
  2. Step 2: Convert to fraction form
    32,689.75/45,109.95 = 18,348.25/x
  3. Step 3: Cross multiply
    32,689.75x = 45,109.95 × 18,348.25
  4. Step 4: Simplify right side
    32,689.75x = 827,688,640.09
  5. Step 5: Solve for x
    x = 827,688,640.09/32,689.75
  6. Step 6: Final answer
    x = 25,319.52

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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.