Home / 28,198.05-38,913.63-15,451.26

Finding the Fourth Proportional to 28,198.05, 38,913.63 and 15,451.26

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Solution

The fourth proportional to 28,198.05, 38,913.63 and 15,451.26 is: 21,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.05 : 38,913.63 = 15,451.26 : x
  2. Step 2: Convert to fraction form
    28,198.05/38,913.63 = 15,451.26/x
  3. Step 3: Cross multiply
    28,198.05x = 38,913.63 × 15,451.26
  4. Step 4: Simplify right side
    28,198.05x = 601,264,614.67
  5. Step 5: Solve for x
    x = 601,264,614.67/28,198.05
  6. Step 6: Final answer
    x = 21,322.91

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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.