Home / 20,291.31-27,970.52-19,897.65

Finding the Fourth Proportional to 20,291.31, 27,970.52 and 19,897.65

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Solution

The fourth proportional to 20,291.31, 27,970.52 and 19,897.65 is: 27,427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.31 : 27,970.52 = 19,897.65 : x
  2. Step 2: Convert to fraction form
    20,291.31/27,970.52 = 19,897.65/x
  3. Step 3: Cross multiply
    20,291.31x = 27,970.52 × 19,897.65
  4. Step 4: Simplify right side
    20,291.31x = 556,547,517.79
  5. Step 5: Solve for x
    x = 556,547,517.79/20,291.31
  6. Step 6: Final answer
    x = 27,427.88

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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.