Home / 21,269.88-29,303.30-15,291.21

Finding the Fourth Proportional to 21,269.88, 29,303.30 and 15,291.21

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Solution

The fourth proportional to 21,269.88, 29,303.30 and 15,291.21 is: 21,066.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.88 : 29,303.30 = 15,291.21 : x
  2. Step 2: Convert to fraction form
    21,269.88/29,303.30 = 15,291.21/x
  3. Step 3: Cross multiply
    21,269.88x = 29,303.30 × 15,291.21
  4. Step 4: Simplify right side
    21,269.88x = 448,082,837.54
  5. Step 5: Solve for x
    x = 448,082,837.54/21,269.88
  6. Step 6: Final answer
    x = 21,066.54

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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.