Home / 21,116.13-29,113.83-15,446.31

Finding the Fourth Proportional to 21,116.13, 29,113.83 and 15,446.31

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Solution

The fourth proportional to 21,116.13, 29,113.83 and 15,446.31 is: 21,296.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.13 : 29,113.83 = 15,446.31 : x
  2. Step 2: Convert to fraction form
    21,116.13/29,113.83 = 15,446.31/x
  3. Step 3: Cross multiply
    21,116.13x = 29,113.83 × 15,446.31
  4. Step 4: Simplify right side
    21,116.13x = 449,701,243.47
  5. Step 5: Solve for x
    x = 449,701,243.47/21,116.13
  6. Step 6: Final answer
    x = 21,296.57

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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.