Home / 12,959.49-19,440.99-4,191.45

Finding the Fourth Proportional to 12,959.49, 19,440.99 and 4,191.45

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Solution

The fourth proportional to 12,959.49, 19,440.99 and 4,191.45 is: 6,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.49 : 19,440.99 = 4,191.45 : x
  2. Step 2: Convert to fraction form
    12,959.49/19,440.99 = 4,191.45/x
  3. Step 3: Cross multiply
    12,959.49x = 19,440.99 × 4,191.45
  4. Step 4: Simplify right side
    12,959.49x = 81,485,937.54
  5. Step 5: Solve for x
    x = 81,485,937.54/12,959.49
  6. Step 6: Final answer
    x = 6,287.74

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Double scale
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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.