Home / 19,857.23-27,387.80-13,488.73

Finding the Fourth Proportional to 19,857.23, 27,387.80 and 13,488.73

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Solution

The fourth proportional to 19,857.23, 27,387.80 and 13,488.73 is: 18,604.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.23 : 27,387.80 = 13,488.73 : x
  2. Step 2: Convert to fraction form
    19,857.23/27,387.80 = 13,488.73/x
  3. Step 3: Cross multiply
    19,857.23x = 27,387.80 × 13,488.73
  4. Step 4: Simplify right side
    19,857.23x = 369,426,689.54
  5. Step 5: Solve for x
    x = 369,426,689.54/19,857.23
  6. Step 6: Final answer
    x = 18,604.14

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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.