Home / 20,275.32-27,979.64-11,322.95

Finding the Fourth Proportional to 20,275.32, 27,979.64 and 11,322.95

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Solution

The fourth proportional to 20,275.32, 27,979.64 and 11,322.95 is: 15,625.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.32 : 27,979.64 = 11,322.95 : x
  2. Step 2: Convert to fraction form
    20,275.32/27,979.64 = 11,322.95/x
  3. Step 3: Cross multiply
    20,275.32x = 27,979.64 × 11,322.95
  4. Step 4: Simplify right side
    20,275.32x = 316,811,974.38
  5. Step 5: Solve for x
    x = 316,811,974.38/20,275.32
  6. Step 6: Final answer
    x = 15,625.50

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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.