Home / 20,109.71-27,734.67-15,085.08

Finding the Fourth Proportional to 20,109.71, 27,734.67 and 15,085.08

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Solution

The fourth proportional to 20,109.71, 27,734.67 and 15,085.08 is: 20,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.71 : 27,734.67 = 15,085.08 : x
  2. Step 2: Convert to fraction form
    20,109.71/27,734.67 = 15,085.08/x
  3. Step 3: Cross multiply
    20,109.71x = 27,734.67 × 15,085.08
  4. Step 4: Simplify right side
    20,109.71x = 418,379,715.72
  5. Step 5: Solve for x
    x = 418,379,715.72/20,109.71
  6. Step 6: Final answer
    x = 20,804.87

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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.