Home / 19,815.44-27,345.13-10,862.78

Finding the Fourth Proportional to 19,815.44, 27,345.13 and 10,862.78

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Solution

The fourth proportional to 19,815.44, 27,345.13 and 10,862.78 is: 14,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.44 : 27,345.13 = 10,862.78 : x
  2. Step 2: Convert to fraction form
    19,815.44/27,345.13 = 10,862.78/x
  3. Step 3: Cross multiply
    19,815.44x = 27,345.13 × 10,862.78
  4. Step 4: Simplify right side
    19,815.44x = 297,043,967.38
  5. Step 5: Solve for x
    x = 297,043,967.38/19,815.44
  6. Step 6: Final answer
    x = 14,990.53

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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.