Home / 47,976.81-71,959.68-12,913.71

Finding the Fourth Proportional to 47,976.81, 71,959.68 and 12,913.71

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Solution

The fourth proportional to 47,976.81, 71,959.68 and 12,913.71 is: 19,369.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,976.81 : 71,959.68 = 12,913.71 : x
  2. Step 2: Convert to fraction form
    47,976.81/71,959.68 = 12,913.71/x
  3. Step 3: Cross multiply
    47,976.81x = 71,959.68 × 12,913.71
  4. Step 4: Simplify right side
    47,976.81x = 929,266,439.21
  5. Step 5: Solve for x
    x = 929,266,439.21/47,976.81
  6. Step 6: Final answer
    x = 19,369.08

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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.