Home / 21,418.91-29,557.14-11,858.13

Finding the Fourth Proportional to 21,418.91, 29,557.14 and 11,858.13

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Solution

The fourth proportional to 21,418.91, 29,557.14 and 11,858.13 is: 16,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.91 : 29,557.14 = 11,858.13 : x
  2. Step 2: Convert to fraction form
    21,418.91/29,557.14 = 11,858.13/x
  3. Step 3: Cross multiply
    21,418.91x = 29,557.14 × 11,858.13
  4. Step 4: Simplify right side
    21,418.91x = 350,492,349.26
  5. Step 5: Solve for x
    x = 350,492,349.26/21,418.91
  6. Step 6: Final answer
    x = 16,363.69

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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.