Home / 21,427.26-29,569.95-12,929.82

Finding the Fourth Proportional to 21,427.26, 29,569.95 and 12,929.82

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Solution

The fourth proportional to 21,427.26, 29,569.95 and 12,929.82 is: 17,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.26 : 29,569.95 = 12,929.82 : x
  2. Step 2: Convert to fraction form
    21,427.26/29,569.95 = 12,929.82/x
  3. Step 3: Cross multiply
    21,427.26x = 29,569.95 × 12,929.82
  4. Step 4: Simplify right side
    21,427.26x = 382,334,130.91
  5. Step 5: Solve for x
    x = 382,334,130.91/21,427.26
  6. Step 6: Final answer
    x = 17,843.35

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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.