Home / 19,864.41-27,424.92-13,155.78

Finding the Fourth Proportional to 19,864.41, 27,424.92 and 13,155.78

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Solution

The fourth proportional to 19,864.41, 27,424.92 and 13,155.78 is: 18,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.41 : 27,424.92 = 13,155.78 : x
  2. Step 2: Convert to fraction form
    19,864.41/27,424.92 = 13,155.78/x
  3. Step 3: Cross multiply
    19,864.41x = 27,424.92 × 13,155.78
  4. Step 4: Simplify right side
    19,864.41x = 360,796,214.04
  5. Step 5: Solve for x
    x = 360,796,214.04/19,864.41
  6. Step 6: Final answer
    x = 18,162.95

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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.