Home / 21,007.84-28,990.24-11,447.52

Finding the Fourth Proportional to 21,007.84, 28,990.24 and 11,447.52

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Solution

The fourth proportional to 21,007.84, 28,990.24 and 11,447.52 is: 15,797.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.84 : 28,990.24 = 11,447.52 : x
  2. Step 2: Convert to fraction form
    21,007.84/28,990.24 = 11,447.52/x
  3. Step 3: Cross multiply
    21,007.84x = 28,990.24 × 11,447.52
  4. Step 4: Simplify right side
    21,007.84x = 331,866,352.20
  5. Step 5: Solve for x
    x = 331,866,352.20/21,007.84
  6. Step 6: Final answer
    x = 15,797.26

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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.