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Finding the Fourth Proportional to 15,372.65, 21,075.97 and 15,092.44

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Solution

The fourth proportional to 15,372.65, 21,075.97 and 15,092.44 is: 20,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.65 : 21,075.97 = 15,092.44 : x
  2. Step 2: Convert to fraction form
    15,372.65/21,075.97 = 15,092.44/x
  3. Step 3: Cross multiply
    15,372.65x = 21,075.97 × 15,092.44
  4. Step 4: Simplify right side
    15,372.65x = 318,087,812.67
  5. Step 5: Solve for x
    x = 318,087,812.67/15,372.65
  6. Step 6: Final answer
    x = 20,691.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.