Home / 21,427.04-29,572.26-12,929.60

Finding the Fourth Proportional to 21,427.04, 29,572.26 and 12,929.60

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Solution

The fourth proportional to 21,427.04, 29,572.26 and 12,929.60 is: 17,844.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.04 : 29,572.26 = 12,929.60 : x
  2. Step 2: Convert to fraction form
    21,427.04/29,572.26 = 12,929.60/x
  3. Step 3: Cross multiply
    21,427.04x = 29,572.26 × 12,929.60
  4. Step 4: Simplify right side
    21,427.04x = 382,357,492.90
  5. Step 5: Solve for x
    x = 382,357,492.90/21,427.04
  6. Step 6: Final answer
    x = 17,844.62

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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.