Home / 47,969.71-71,948.09-12,911.47

Finding the Fourth Proportional to 47,969.71, 71,948.09 and 12,911.47

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Solution

The fourth proportional to 47,969.71, 71,948.09 and 12,911.47 is: 19,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,969.71 : 71,948.09 = 12,911.47 : x
  2. Step 2: Convert to fraction form
    47,969.71/71,948.09 = 12,911.47/x
  3. Step 3: Cross multiply
    47,969.71x = 71,948.09 × 12,911.47
  4. Step 4: Simplify right side
    47,969.71x = 928,955,753.18
  5. Step 5: Solve for x
    x = 928,955,753.18/47,969.71
  6. Step 6: Final answer
    x = 19,365.46

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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.