Home / 18,887.79-26,065.64-10,390.13

Finding the Fourth Proportional to 18,887.79, 26,065.64 and 10,390.13

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Solution

The fourth proportional to 18,887.79, 26,065.64 and 10,390.13 is: 14,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.79 : 26,065.64 = 10,390.13 : x
  2. Step 2: Convert to fraction form
    18,887.79/26,065.64 = 10,390.13/x
  3. Step 3: Cross multiply
    18,887.79x = 26,065.64 × 10,390.13
  4. Step 4: Simplify right side
    18,887.79x = 270,825,453.30
  5. Step 5: Solve for x
    x = 270,825,453.30/18,887.79
  6. Step 6: Final answer
    x = 14,338.65

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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.