Home / 28,336.78-42,455.91-19,885.36

Finding the Fourth Proportional to 28,336.78, 42,455.91 and 19,885.36

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Solution

The fourth proportional to 28,336.78, 42,455.91 and 19,885.36 is: 29,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,336.78 : 42,455.91 = 19,885.36 : x
  2. Step 2: Convert to fraction form
    28,336.78/42,455.91 = 19,885.36/x
  3. Step 3: Cross multiply
    28,336.78x = 42,455.91 × 19,885.36
  4. Step 4: Simplify right side
    28,336.78x = 844,251,054.48
  5. Step 5: Solve for x
    x = 844,251,054.48/28,336.78
  6. Step 6: Final answer
    x = 29,793.47

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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.