Home / 20,292.31-27,971.89-19,898.65

Finding the Fourth Proportional to 20,292.31, 27,971.89 and 19,898.65

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Solution

The fourth proportional to 20,292.31, 27,971.89 and 19,898.65 is: 27,429.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.31 : 27,971.89 = 19,898.65 : x
  2. Step 2: Convert to fraction form
    20,292.31/27,971.89 = 19,898.65/x
  3. Step 3: Cross multiply
    20,292.31x = 27,971.89 × 19,898.65
  4. Step 4: Simplify right side
    20,292.31x = 556,602,848.95
  5. Step 5: Solve for x
    x = 556,602,848.95/20,292.31
  6. Step 6: Final answer
    x = 27,429.25

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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.