Home / 20,269.13-27,970.85-11,316.38

Finding the Fourth Proportional to 20,269.13, 27,970.85 and 11,316.38

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Solution

The fourth proportional to 20,269.13, 27,970.85 and 11,316.38 is: 15,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.13 : 27,970.85 = 11,316.38 : x
  2. Step 2: Convert to fraction form
    20,269.13/27,970.85 = 11,316.38/x
  3. Step 3: Cross multiply
    20,269.13x = 27,970.85 × 11,316.38
  4. Step 4: Simplify right side
    20,269.13x = 316,528,571.09
  5. Step 5: Solve for x
    x = 316,528,571.09/20,269.13
  6. Step 6: Final answer
    x = 15,616.29

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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.