Home / 21,424.08-29,536.44-15,042.12

Finding the Fourth Proportional to 21,424.08, 29,536.44 and 15,042.12

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Solution

The fourth proportional to 21,424.08, 29,536.44 and 15,042.12 is: 20,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.08 : 29,536.44 = 15,042.12 : x
  2. Step 2: Convert to fraction form
    21,424.08/29,536.44 = 15,042.12/x
  3. Step 3: Cross multiply
    21,424.08x = 29,536.44 × 15,042.12
  4. Step 4: Simplify right side
    21,424.08x = 444,290,674.85
  5. Step 5: Solve for x
    x = 444,290,674.85/21,424.08
  6. Step 6: Final answer
    x = 20,737.91

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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.