Home / 21,994.08-30,350.16-12,561.36

Finding the Fourth Proportional to 21,994.08, 30,350.16 and 12,561.36

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Solution

The fourth proportional to 21,994.08, 30,350.16 and 12,561.36 is: 17,333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.08 : 30,350.16 = 12,561.36 : x
  2. Step 2: Convert to fraction form
    21,994.08/30,350.16 = 12,561.36/x
  3. Step 3: Cross multiply
    21,994.08x = 30,350.16 × 12,561.36
  4. Step 4: Simplify right side
    21,994.08x = 381,239,285.82
  5. Step 5: Solve for x
    x = 381,239,285.82/21,994.08
  6. Step 6: Final answer
    x = 17,333.72

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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.