Home / 12,927.78-17,826.21-8,728.74

Finding the Fourth Proportional to 12,927.78, 17,826.21 and 8,728.74

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Solution

The fourth proportional to 12,927.78, 17,826.21 and 8,728.74 is: 12,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.78 : 17,826.21 = 8,728.74 : x
  2. Step 2: Convert to fraction form
    12,927.78/17,826.21 = 8,728.74/x
  3. Step 3: Cross multiply
    12,927.78x = 17,826.21 × 8,728.74
  4. Step 4: Simplify right side
    12,927.78x = 155,600,352.28
  5. Step 5: Solve for x
    x = 155,600,352.28/12,927.78
  6. Step 6: Final answer
    x = 12,036.12

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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.