Home / 19,839.71-27,379.80-10,887.14

Finding the Fourth Proportional to 19,839.71, 27,379.80 and 10,887.14

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Solution

The fourth proportional to 19,839.71, 27,379.80 and 10,887.14 is: 15,024.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.71 : 27,379.80 = 10,887.14 : x
  2. Step 2: Convert to fraction form
    19,839.71/27,379.80 = 10,887.14/x
  3. Step 3: Cross multiply
    19,839.71x = 27,379.80 × 10,887.14
  4. Step 4: Simplify right side
    19,839.71x = 298,087,784.22
  5. Step 5: Solve for x
    x = 298,087,784.22/19,839.71
  6. Step 6: Final answer
    x = 15,024.80

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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.