Home / 21,231.36-29,272.32-14,137.92

Finding the Fourth Proportional to 21,231.36, 29,272.32 and 14,137.92

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Solution

The fourth proportional to 21,231.36, 29,272.32 and 14,137.92 is: 19,492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.36 : 29,272.32 = 14,137.92 : x
  2. Step 2: Convert to fraction form
    21,231.36/29,272.32 = 14,137.92/x
  3. Step 3: Cross multiply
    21,231.36x = 29,272.32 × 14,137.92
  4. Step 4: Simplify right side
    21,231.36x = 413,849,718.37
  5. Step 5: Solve for x
    x = 413,849,718.37/21,231.36
  6. Step 6: Final answer
    x = 19,492.38

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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.