Home / 18,178.40-25,085.55-10,221.08

Finding the Fourth Proportional to 18,178.40, 25,085.55 and 10,221.08

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Solution

The fourth proportional to 18,178.40, 25,085.55 and 10,221.08 is: 14,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.40 : 25,085.55 = 10,221.08 : x
  2. Step 2: Convert to fraction form
    18,178.40/25,085.55 = 10,221.08/x
  3. Step 3: Cross multiply
    18,178.40x = 25,085.55 × 10,221.08
  4. Step 4: Simplify right side
    18,178.40x = 256,401,413.39
  5. Step 5: Solve for x
    x = 256,401,413.39/18,178.40
  6. Step 6: Final answer
    x = 14,104.73

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Half scale
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Double scale
Find fourth proportional to 18,179.40, 25,086.93 and 10,222.08
Similar ratio
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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.