Home / 28,990.22-39,988.82-19,167.43

Finding the Fourth Proportional to 28,990.22, 39,988.82 and 19,167.43

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Solution

The fourth proportional to 28,990.22, 39,988.82 and 19,167.43 is: 26,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.22 : 39,988.82 = 19,167.43 : x
  2. Step 2: Convert to fraction form
    28,990.22/39,988.82 = 19,167.43/x
  3. Step 3: Cross multiply
    28,990.22x = 39,988.82 × 19,167.43
  4. Step 4: Simplify right side
    28,990.22x = 766,482,908.13
  5. Step 5: Solve for x
    x = 766,482,908.13/28,990.22
  6. Step 6: Final answer
    x = 26,439.36

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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.