Home / 19,815.32-27,345.18-10,862.87

Finding the Fourth Proportional to 19,815.32, 27,345.18 and 10,862.87

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Solution

The fourth proportional to 19,815.32, 27,345.18 and 10,862.87 is: 14,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.32 : 27,345.18 = 10,862.87 : x
  2. Step 2: Convert to fraction form
    19,815.32/27,345.18 = 10,862.87/x
  3. Step 3: Cross multiply
    19,815.32x = 27,345.18 × 10,862.87
  4. Step 4: Simplify right side
    19,815.32x = 297,046,998.74
  5. Step 5: Solve for x
    x = 297,046,998.74/19,815.32
  6. Step 6: Final answer
    x = 14,990.78

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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.