Home / 21,632.99-29,853.92-12,686.95

Finding the Fourth Proportional to 21,632.99, 29,853.92 and 12,686.95

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Solution

The fourth proportional to 21,632.99, 29,853.92 and 12,686.95 is: 17,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.99 : 29,853.92 = 12,686.95 : x
  2. Step 2: Convert to fraction form
    21,632.99/29,853.92 = 12,686.95/x
  3. Step 3: Cross multiply
    21,632.99x = 29,853.92 × 12,686.95
  4. Step 4: Simplify right side
    21,632.99x = 378,754,977.64
  5. Step 5: Solve for x
    x = 378,754,977.64/21,632.99
  6. Step 6: Final answer
    x = 17,508.21

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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.