Home / 18,936.11-26,131.32-10,869.53

Finding the Fourth Proportional to 18,936.11, 26,131.32 and 10,869.53

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Solution

The fourth proportional to 18,936.11, 26,131.32 and 10,869.53 is: 14,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.11 : 26,131.32 = 10,869.53 : x
  2. Step 2: Convert to fraction form
    18,936.11/26,131.32 = 10,869.53/x
  3. Step 3: Cross multiply
    18,936.11x = 26,131.32 × 10,869.53
  4. Step 4: Simplify right side
    18,936.11x = 284,035,036.02
  5. Step 5: Solve for x
    x = 284,035,036.02/18,936.11
  6. Step 6: Final answer
    x = 14,999.65

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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.