Home / 28,826.62-39,781.55-16,890.46

Finding the Fourth Proportional to 28,826.62, 39,781.55 and 16,890.46

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Solution

The fourth proportional to 28,826.62, 39,781.55 and 16,890.46 is: 23,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,826.62 : 39,781.55 = 16,890.46 : x
  2. Step 2: Convert to fraction form
    28,826.62/39,781.55 = 16,890.46/x
  3. Step 3: Cross multiply
    28,826.62x = 39,781.55 × 16,890.46
  4. Step 4: Simplify right side
    28,826.62x = 671,928,679.01
  5. Step 5: Solve for x
    x = 671,928,679.01/28,826.62
  6. Step 6: Final answer
    x = 23,309.31

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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.