Home / 28,341.09-39,109.64-15,766.65

Finding the Fourth Proportional to 28,341.09, 39,109.64 and 15,766.65

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Solution

The fourth proportional to 28,341.09, 39,109.64 and 15,766.65 is: 21,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.09 : 39,109.64 = 15,766.65 : x
  2. Step 2: Convert to fraction form
    28,341.09/39,109.64 = 15,766.65/x
  3. Step 3: Cross multiply
    28,341.09x = 39,109.64 × 15,766.65
  4. Step 4: Simplify right side
    28,341.09x = 616,627,926.67
  5. Step 5: Solve for x
    x = 616,627,926.67/28,341.09
  6. Step 6: Final answer
    x = 21,757.38

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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.