Home / 21,266.78-29,311.07-15,589.46

Finding the Fourth Proportional to 21,266.78, 29,311.07 and 15,589.46

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Solution

The fourth proportional to 21,266.78, 29,311.07 and 15,589.46 is: 21,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.78 : 29,311.07 = 15,589.46 : x
  2. Step 2: Convert to fraction form
    21,266.78/29,311.07 = 15,589.46/x
  3. Step 3: Cross multiply
    21,266.78x = 29,311.07 × 15,589.46
  4. Step 4: Simplify right side
    21,266.78x = 456,943,748.65
  5. Step 5: Solve for x
    x = 456,943,748.65/21,266.78
  6. Step 6: Final answer
    x = 21,486.27

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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.