Home / 28,001.11-42,001.77-19,209.37

Finding the Fourth Proportional to 28,001.11, 42,001.77 and 19,209.37

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Solution

The fourth proportional to 28,001.11, 42,001.77 and 19,209.37 is: 28,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.11 : 42,001.77 = 19,209.37 : x
  2. Step 2: Convert to fraction form
    28,001.11/42,001.77 = 19,209.37/x
  3. Step 3: Cross multiply
    28,001.11x = 42,001.77 × 19,209.37
  4. Step 4: Simplify right side
    28,001.11x = 806,827,540.58
  5. Step 5: Solve for x
    x = 806,827,540.58/28,001.11
  6. Step 6: Final answer
    x = 28,814.13

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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.