Home / 21,471.84-29,632.77-12,519.72

Finding the Fourth Proportional to 21,471.84, 29,632.77 and 12,519.72

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Solution

The fourth proportional to 21,471.84, 29,632.77 and 12,519.72 is: 17,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.84 : 29,632.77 = 12,519.72 : x
  2. Step 2: Convert to fraction form
    21,471.84/29,632.77 = 12,519.72/x
  3. Step 3: Cross multiply
    21,471.84x = 29,632.77 × 12,519.72
  4. Step 4: Simplify right side
    21,471.84x = 370,993,983.22
  5. Step 5: Solve for x
    x = 370,993,983.22/21,471.84
  6. Step 6: Final answer
    x = 17,278.16

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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.