Home / 21,987.12-32,974.92-10,288.56

Finding the Fourth Proportional to 21,987.12, 32,974.92 and 10,288.56

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Solution

The fourth proportional to 21,987.12, 32,974.92 and 10,288.56 is: 15,430.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.12 : 32,974.92 = 10,288.56 : x
  2. Step 2: Convert to fraction form
    21,987.12/32,974.92 = 10,288.56/x
  3. Step 3: Cross multiply
    21,987.12x = 32,974.92 × 10,288.56
  4. Step 4: Simplify right side
    21,987.12x = 339,264,442.92
  5. Step 5: Solve for x
    x = 339,264,442.92/21,987.12
  6. Step 6: Final answer
    x = 15,430.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.