Home / 25,981.56-38,965.86-10,189.80

Finding the Fourth Proportional to 25,981.56, 38,965.86 and 10,189.80

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Solution

The fourth proportional to 25,981.56, 38,965.86 and 10,189.80 is: 15,282.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.56 : 38,965.86 = 10,189.80 : x
  2. Step 2: Convert to fraction form
    25,981.56/38,965.86 = 10,189.80/x
  3. Step 3: Cross multiply
    25,981.56x = 38,965.86 × 10,189.80
  4. Step 4: Simplify right side
    25,981.56x = 397,054,320.23
  5. Step 5: Solve for x
    x = 397,054,320.23/25,981.56
  6. Step 6: Final answer
    x = 15,282.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.