Home / 28,443.52-39,252.90-15,868

Finding the Fourth Proportional to 28,443.52, 39,252.90 and 15,868

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Solution

The fourth proportional to 28,443.52, 39,252.90 and 15,868 is: 21,898.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.52 : 39,252.90 = 15,868 : x
  2. Step 2: Convert to fraction form
    28,443.52/39,252.90 = 15,868/x
  3. Step 3: Cross multiply
    28,443.52x = 39,252.90 × 15,868
  4. Step 4: Simplify right side
    28,443.52x = 622,865,017.20
  5. Step 5: Solve for x
    x = 622,865,017.20/28,443.52
  6. Step 6: Final answer
    x = 21,898.31

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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.