Home / 28,167.13-42,267.10-10,638.33

Finding the Fourth Proportional to 28,167.13, 42,267.10 and 10,638.33

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Solution

The fourth proportional to 28,167.13, 42,267.10 and 10,638.33 is: 15,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.13 : 42,267.10 = 10,638.33 : x
  2. Step 2: Convert to fraction form
    28,167.13/42,267.10 = 10,638.33/x
  3. Step 3: Cross multiply
    28,167.13x = 42,267.10 × 10,638.33
  4. Step 4: Simplify right side
    28,167.13x = 449,651,357.94
  5. Step 5: Solve for x
    x = 449,651,357.94/28,167.13
  6. Step 6: Final answer
    x = 15,963.69

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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.