Home / 12,961.12-19,439.64-4,639.84

Finding the Fourth Proportional to 12,961.12, 19,439.64 and 4,639.84

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Solution

The fourth proportional to 12,961.12, 19,439.64 and 4,639.84 is: 6,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.12 : 19,439.64 = 4,639.84 : x
  2. Step 2: Convert to fraction form
    12,961.12/19,439.64 = 4,639.84/x
  3. Step 3: Cross multiply
    12,961.12x = 19,439.64 × 4,639.84
  4. Step 4: Simplify right side
    12,961.12x = 90,196,819.26
  5. Step 5: Solve for x
    x = 90,196,819.26/12,961.12
  6. Step 6: Final answer
    x = 6,959.03

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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.