Home / 21,159.73-31,739.91-8,008.57

Finding the Fourth Proportional to 21,159.73, 31,739.91 and 8,008.57

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Solution

The fourth proportional to 21,159.73, 31,739.91 and 8,008.57 is: 12,012.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.73 : 31,739.91 = 8,008.57 : x
  2. Step 2: Convert to fraction form
    21,159.73/31,739.91 = 8,008.57/x
  3. Step 3: Cross multiply
    21,159.73x = 31,739.91 × 8,008.57
  4. Step 4: Simplify right side
    21,159.73x = 254,191,291.03
  5. Step 5: Solve for x
    x = 254,191,291.03/21,159.73
  6. Step 6: Final answer
    x = 12,012.97

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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.