Home / 19,238.72-28,857.28-5,387.36

Finding the Fourth Proportional to 19,238.72, 28,857.28 and 5,387.36

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Solution

The fourth proportional to 19,238.72, 28,857.28 and 5,387.36 is: 8,080.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.72 : 28,857.28 = 5,387.36 : x
  2. Step 2: Convert to fraction form
    19,238.72/28,857.28 = 5,387.36/x
  3. Step 3: Cross multiply
    19,238.72x = 28,857.28 × 5,387.36
  4. Step 4: Simplify right side
    19,238.72x = 155,464,555.98
  5. Step 5: Solve for x
    x = 155,464,555.98/19,238.72
  6. Step 6: Final answer
    x = 8,080.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.