Home / 21,281.06-29,367.62-11,720.76

Finding the Fourth Proportional to 21,281.06, 29,367.62 and 11,720.76

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Solution

The fourth proportional to 21,281.06, 29,367.62 and 11,720.76 is: 16,174.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.06 : 29,367.62 = 11,720.76 : x
  2. Step 2: Convert to fraction form
    21,281.06/29,367.62 = 11,720.76/x
  3. Step 3: Cross multiply
    21,281.06x = 29,367.62 × 11,720.76
  4. Step 4: Simplify right side
    21,281.06x = 344,210,767.19
  5. Step 5: Solve for x
    x = 344,210,767.19/21,281.06
  6. Step 6: Final answer
    x = 16,174.52

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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.