Home / 18,937.14-26,131.71-10,979.88

Finding the Fourth Proportional to 18,937.14, 26,131.71 and 10,979.88

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Solution

The fourth proportional to 18,937.14, 26,131.71 and 10,979.88 is: 15,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.14 : 26,131.71 = 10,979.88 : x
  2. Step 2: Convert to fraction form
    18,937.14/26,131.71 = 10,979.88/x
  3. Step 3: Cross multiply
    18,937.14x = 26,131.71 × 10,979.88
  4. Step 4: Simplify right side
    18,937.14x = 286,923,056.67
  5. Step 5: Solve for x
    x = 286,923,056.67/18,937.14
  6. Step 6: Final answer
    x = 15,151.34

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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.