Home / 18,320.57-25,287.23-12,656.33

Finding the Fourth Proportional to 18,320.57, 25,287.23 and 12,656.33

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Solution

The fourth proportional to 18,320.57, 25,287.23 and 12,656.33 is: 17,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.57 : 25,287.23 = 12,656.33 : x
  2. Step 2: Convert to fraction form
    18,320.57/25,287.23 = 12,656.33/x
  3. Step 3: Cross multiply
    18,320.57x = 25,287.23 × 12,656.33
  4. Step 4: Simplify right side
    18,320.57x = 320,043,432.87
  5. Step 5: Solve for x
    x = 320,043,432.87/18,320.57
  6. Step 6: Final answer
    x = 17,469.08

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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.