Home / 18,403.20-25,401.60-16,588.80

Finding the Fourth Proportional to 18,403.20, 25,401.60 and 16,588.80

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Solution

The fourth proportional to 18,403.20, 25,401.60 and 16,588.80 is: 22,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.20 : 25,401.60 = 16,588.80 : x
  2. Step 2: Convert to fraction form
    18,403.20/25,401.60 = 16,588.80/x
  3. Step 3: Cross multiply
    18,403.20x = 25,401.60 × 16,588.80
  4. Step 4: Simplify right side
    18,403.20x = 421,382,062.08
  5. Step 5: Solve for x
    x = 421,382,062.08/18,403.20
  6. Step 6: Final answer
    x = 22,897.22

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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.