Home / 21,080.48-29,071.28-13,529.18

Finding the Fourth Proportional to 21,080.48, 29,071.28 and 13,529.18

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Solution

The fourth proportional to 21,080.48, 29,071.28 and 13,529.18 is: 18,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.48 : 29,071.28 = 13,529.18 : x
  2. Step 2: Convert to fraction form
    21,080.48/29,071.28 = 13,529.18/x
  3. Step 3: Cross multiply
    21,080.48x = 29,071.28 × 13,529.18
  4. Step 4: Simplify right side
    21,080.48x = 393,310,366.95
  5. Step 5: Solve for x
    x = 393,310,366.95/21,080.48
  6. Step 6: Final answer
    x = 18,657.57

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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.