Home / 21,069.14-29,075.11-11,508.91

Finding the Fourth Proportional to 21,069.14, 29,075.11 and 11,508.91

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Solution

The fourth proportional to 21,069.14, 29,075.11 and 11,508.91 is: 15,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.14 : 29,075.11 = 11,508.91 : x
  2. Step 2: Convert to fraction form
    21,069.14/29,075.11 = 11,508.91/x
  3. Step 3: Cross multiply
    21,069.14x = 29,075.11 × 11,508.91
  4. Step 4: Simplify right side
    21,069.14x = 334,622,869.28
  5. Step 5: Solve for x
    x = 334,622,869.28/21,069.14
  6. Step 6: Final answer
    x = 15,882.13

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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.