Home / 30,685.54-42,348.25-18,751.16

Finding the Fourth Proportional to 30,685.54, 42,348.25 and 18,751.16

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Solution

The fourth proportional to 30,685.54, 42,348.25 and 18,751.16 is: 25,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.54 : 42,348.25 = 18,751.16 : x
  2. Step 2: Convert to fraction form
    30,685.54/42,348.25 = 18,751.16/x
  3. Step 3: Cross multiply
    30,685.54x = 42,348.25 × 18,751.16
  4. Step 4: Simplify right side
    30,685.54x = 794,078,811.47
  5. Step 5: Solve for x
    x = 794,078,811.47/30,685.54
  6. Step 6: Final answer
    x = 25,877.95

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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.