Home / 21,069.44-29,075.28-13,508

Finding the Fourth Proportional to 21,069.44, 29,075.28 and 13,508

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Solution

The fourth proportional to 21,069.44, 29,075.28 and 13,508 is: 18,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.44 : 29,075.28 = 13,508 : x
  2. Step 2: Convert to fraction form
    21,069.44/29,075.28 = 13,508/x
  3. Step 3: Cross multiply
    21,069.44x = 29,075.28 × 13,508
  4. Step 4: Simplify right side
    21,069.44x = 392,748,882.24
  5. Step 5: Solve for x
    x = 392,748,882.24/21,069.44
  6. Step 6: Final answer
    x = 18,640.69

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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.