Home / 21,014.58-28,990.92-15,044.08

Finding the Fourth Proportional to 21,014.58, 28,990.92 and 15,044.08

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Solution

The fourth proportional to 21,014.58, 28,990.92 and 15,044.08 is: 20,754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.58 : 28,990.92 = 15,044.08 : x
  2. Step 2: Convert to fraction form
    21,014.58/28,990.92 = 15,044.08/x
  3. Step 3: Cross multiply
    21,014.58x = 28,990.92 × 15,044.08
  4. Step 4: Simplify right side
    21,014.58x = 436,141,719.75
  5. Step 5: Solve for x
    x = 436,141,719.75/21,014.58
  6. Step 6: Final answer
    x = 20,754.24

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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.