Home / 21,034.17-28,968.09-20,574.90

Finding the Fourth Proportional to 21,034.17, 28,968.09 and 20,574.90

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Solution

The fourth proportional to 21,034.17, 28,968.09 and 20,574.90 is: 28,335.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.17 : 28,968.09 = 20,574.90 : x
  2. Step 2: Convert to fraction form
    21,034.17/28,968.09 = 20,574.90/x
  3. Step 3: Cross multiply
    21,034.17x = 28,968.09 × 20,574.90
  4. Step 4: Simplify right side
    21,034.17x = 596,015,554.94
  5. Step 5: Solve for x
    x = 596,015,554.94/21,034.17
  6. Step 6: Final answer
    x = 28,335.59

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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.