Home / 12,280.88-18,427.84-5,355.92

Finding the Fourth Proportional to 12,280.88, 18,427.84 and 5,355.92

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Solution

The fourth proportional to 12,280.88, 18,427.84 and 5,355.92 is: 8,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.88 : 18,427.84 = 5,355.92 : x
  2. Step 2: Convert to fraction form
    12,280.88/18,427.84 = 5,355.92/x
  3. Step 3: Cross multiply
    12,280.88x = 18,427.84 × 5,355.92
  4. Step 4: Simplify right side
    12,280.88x = 98,698,036.81
  5. Step 5: Solve for x
    x = 98,698,036.81/12,280.88
  6. Step 6: Final answer
    x = 8,036.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.