Home / 21,184.29-31,726.32-18,395.81

Finding the Fourth Proportional to 21,184.29, 31,726.32 and 18,395.81

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Solution

The fourth proportional to 21,184.29, 31,726.32 and 18,395.81 is: 27,550.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.29 : 31,726.32 = 18,395.81 : x
  2. Step 2: Convert to fraction form
    21,184.29/31,726.32 = 18,395.81/x
  3. Step 3: Cross multiply
    21,184.29x = 31,726.32 × 18,395.81
  4. Step 4: Simplify right side
    21,184.29x = 583,631,196.09
  5. Step 5: Solve for x
    x = 583,631,196.09/21,184.29
  6. Step 6: Final answer
    x = 27,550.19

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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.