Home / 21,290.68-29,382.05-11,859.24

Finding the Fourth Proportional to 21,290.68, 29,382.05 and 11,859.24

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Solution

The fourth proportional to 21,290.68, 29,382.05 and 11,859.24 is: 16,366.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.68 : 29,382.05 = 11,859.24 : x
  2. Step 2: Convert to fraction form
    21,290.68/29,382.05 = 11,859.24/x
  3. Step 3: Cross multiply
    21,290.68x = 29,382.05 × 11,859.24
  4. Step 4: Simplify right side
    21,290.68x = 348,448,723.35
  5. Step 5: Solve for x
    x = 348,448,723.35/21,290.68
  6. Step 6: Final answer
    x = 16,366.26

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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.