Home / 21,006.74-28,967.01-18,891.02

Finding the Fourth Proportional to 21,006.74, 28,967.01 and 18,891.02

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Solution

The fourth proportional to 21,006.74, 28,967.01 and 18,891.02 is: 26,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.74 : 28,967.01 = 18,891.02 : x
  2. Step 2: Convert to fraction form
    21,006.74/28,967.01 = 18,891.02/x
  3. Step 3: Cross multiply
    21,006.74x = 28,967.01 × 18,891.02
  4. Step 4: Simplify right side
    21,006.74x = 547,216,365.25
  5. Step 5: Solve for x
    x = 547,216,365.25/21,006.74
  6. Step 6: Final answer
    x = 26,049.56

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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.