Home / 27,654.90-38,166.03-15,721.98

Finding the Fourth Proportional to 27,654.90, 38,166.03 and 15,721.98

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Solution

The fourth proportional to 27,654.90, 38,166.03 and 15,721.98 is: 21,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,654.90 : 38,166.03 = 15,721.98 : x
  2. Step 2: Convert to fraction form
    27,654.90/38,166.03 = 15,721.98/x
  3. Step 3: Cross multiply
    27,654.90x = 38,166.03 × 15,721.98
  4. Step 4: Simplify right side
    27,654.90x = 600,045,560.34
  5. Step 5: Solve for x
    x = 600,045,560.34/27,654.90
  6. Step 6: Final answer
    x = 21,697.62

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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.