Home / 12,878.92-19,319.98-4,557.28

Finding the Fourth Proportional to 12,878.92, 19,319.98 and 4,557.28

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Solution

The fourth proportional to 12,878.92, 19,319.98 and 4,557.28 is: 6,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.92 : 19,319.98 = 4,557.28 : x
  2. Step 2: Convert to fraction form
    12,878.92/19,319.98 = 4,557.28/x
  3. Step 3: Cross multiply
    12,878.92x = 19,319.98 × 4,557.28
  4. Step 4: Simplify right side
    12,878.92x = 88,046,468.43
  5. Step 5: Solve for x
    x = 88,046,468.43/12,878.92
  6. Step 6: Final answer
    x = 6,836.48

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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.