Home / 22,254.36-30,722.12-12,821.10

Finding the Fourth Proportional to 22,254.36, 30,722.12 and 12,821.10

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Solution

The fourth proportional to 22,254.36, 30,722.12 and 12,821.10 is: 17,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,254.36 : 30,722.12 = 12,821.10 : x
  2. Step 2: Convert to fraction form
    22,254.36/30,722.12 = 12,821.10/x
  3. Step 3: Cross multiply
    22,254.36x = 30,722.12 × 12,821.10
  4. Step 4: Simplify right side
    22,254.36x = 393,891,372.73
  5. Step 5: Solve for x
    x = 393,891,372.73/22,254.36
  6. Step 6: Final answer
    x = 17,699.51

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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.