Home / 28,067.29-38,731.83-15,491.77

Finding the Fourth Proportional to 28,067.29, 38,731.83 and 15,491.77

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Solution

The fourth proportional to 28,067.29, 38,731.83 and 15,491.77 is: 21,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.29 : 38,731.83 = 15,491.77 : x
  2. Step 2: Convert to fraction form
    28,067.29/38,731.83 = 15,491.77/x
  3. Step 3: Cross multiply
    28,067.29x = 38,731.83 × 15,491.77
  4. Step 4: Simplify right side
    28,067.29x = 600,024,602.04
  5. Step 5: Solve for x
    x = 600,024,602.04/28,067.29
  6. Step 6: Final answer
    x = 21,378.07

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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.