Home / 28,456.36-42,662.43-18,439.95

Finding the Fourth Proportional to 28,456.36, 42,662.43 and 18,439.95

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Solution

The fourth proportional to 28,456.36, 42,662.43 and 18,439.95 is: 27,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.36 : 42,662.43 = 18,439.95 : x
  2. Step 2: Convert to fraction form
    28,456.36/42,662.43 = 18,439.95/x
  3. Step 3: Cross multiply
    28,456.36x = 42,662.43 × 18,439.95
  4. Step 4: Simplify right side
    28,456.36x = 786,692,908.87
  5. Step 5: Solve for x
    x = 786,692,908.87/28,456.36
  6. Step 6: Final answer
    x = 27,645.59

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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.