Home / 18,932.93-26,127.47-10,979.78

Finding the Fourth Proportional to 18,932.93, 26,127.47 and 10,979.78

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Solution

The fourth proportional to 18,932.93, 26,127.47 and 10,979.78 is: 15,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.93 : 26,127.47 = 10,979.78 : x
  2. Step 2: Convert to fraction form
    18,932.93/26,127.47 = 10,979.78/x
  3. Step 3: Cross multiply
    18,932.93x = 26,127.47 × 10,979.78
  4. Step 4: Simplify right side
    18,932.93x = 286,873,872.56
  5. Step 5: Solve for x
    x = 286,873,872.56/18,932.93
  6. Step 6: Final answer
    x = 15,152.11

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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.