Home / 19,788.10-27,326.08-12,726.78

Finding the Fourth Proportional to 19,788.10, 27,326.08 and 12,726.78

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Solution

The fourth proportional to 19,788.10, 27,326.08 and 12,726.78 is: 17,574.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.10 : 27,326.08 = 12,726.78 : x
  2. Step 2: Convert to fraction form
    19,788.10/27,326.08 = 12,726.78/x
  3. Step 3: Cross multiply
    19,788.10x = 27,326.08 × 12,726.78
  4. Step 4: Simplify right side
    19,788.10x = 347,773,008.42
  5. Step 5: Solve for x
    x = 347,773,008.42/19,788.10
  6. Step 6: Final answer
    x = 17,574.86

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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.