Home / 28,316.25-39,076.43-15,569.65

Finding the Fourth Proportional to 28,316.25, 39,076.43 and 15,569.65

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Solution

The fourth proportional to 28,316.25, 39,076.43 and 15,569.65 is: 21,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.25 : 39,076.43 = 15,569.65 : x
  2. Step 2: Convert to fraction form
    28,316.25/39,076.43 = 15,569.65/x
  3. Step 3: Cross multiply
    28,316.25x = 39,076.43 × 15,569.65
  4. Step 4: Simplify right side
    28,316.25x = 608,406,309.35
  5. Step 5: Solve for x
    x = 608,406,309.35/28,316.25
  6. Step 6: Final answer
    x = 21,486.12

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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.