Home / 18,716.19-28,087.64-13,798.68

Finding the Fourth Proportional to 18,716.19, 28,087.64 and 13,798.68

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Solution

The fourth proportional to 18,716.19, 28,087.64 and 13,798.68 is: 20,707.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.19 : 28,087.64 = 13,798.68 : x
  2. Step 2: Convert to fraction form
    18,716.19/28,087.64 = 13,798.68/x
  3. Step 3: Cross multiply
    18,716.19x = 28,087.64 × 13,798.68
  4. Step 4: Simplify right side
    18,716.19x = 387,572,356.32
  5. Step 5: Solve for x
    x = 387,572,356.32/18,716.19
  6. Step 6: Final answer
    x = 20,707.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.