Home / 18,220.61-25,135.85-10,662.31

Finding the Fourth Proportional to 18,220.61, 25,135.85 and 10,662.31

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Solution

The fourth proportional to 18,220.61, 25,135.85 and 10,662.31 is: 14,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.61 : 25,135.85 = 10,662.31 : x
  2. Step 2: Convert to fraction form
    18,220.61/25,135.85 = 10,662.31/x
  3. Step 3: Cross multiply
    18,220.61x = 25,135.85 × 10,662.31
  4. Step 4: Simplify right side
    18,220.61x = 268,006,141.50
  5. Step 5: Solve for x
    x = 268,006,141.50/18,220.61
  6. Step 6: Final answer
    x = 14,708.95

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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.