Home / 28,054.70-38,699.16-17,979.56

Finding the Fourth Proportional to 28,054.70, 38,699.16 and 17,979.56

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Solution

The fourth proportional to 28,054.70, 38,699.16 and 17,979.56 is: 24,801.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.70 : 38,699.16 = 17,979.56 : x
  2. Step 2: Convert to fraction form
    28,054.70/38,699.16 = 17,979.56/x
  3. Step 3: Cross multiply
    28,054.70x = 38,699.16 × 17,979.56
  4. Step 4: Simplify right side
    28,054.70x = 695,793,869.17
  5. Step 5: Solve for x
    x = 695,793,869.17/28,054.70
  6. Step 6: Final answer
    x = 24,801.33

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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.