Home / 19,959.78-27,544.83-12,000.45

Finding the Fourth Proportional to 19,959.78, 27,544.83 and 12,000.45

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Solution

The fourth proportional to 19,959.78, 27,544.83 and 12,000.45 is: 16,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.78 : 27,544.83 = 12,000.45 : x
  2. Step 2: Convert to fraction form
    19,959.78/27,544.83 = 12,000.45/x
  3. Step 3: Cross multiply
    19,959.78x = 27,544.83 × 12,000.45
  4. Step 4: Simplify right side
    19,959.78x = 330,550,355.17
  5. Step 5: Solve for x
    x = 330,550,355.17/19,959.78
  6. Step 6: Final answer
    x = 16,560.82

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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.