Home / 31,582.71-47,427.54-21,119.97

Finding the Fourth Proportional to 31,582.71, 47,427.54 and 21,119.97

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Solution

The fourth proportional to 31,582.71, 47,427.54 and 21,119.97 is: 31,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,582.71 : 47,427.54 = 21,119.97 : x
  2. Step 2: Convert to fraction form
    31,582.71/47,427.54 = 21,119.97/x
  3. Step 3: Cross multiply
    31,582.71x = 47,427.54 × 21,119.97
  4. Step 4: Simplify right side
    31,582.71x = 1,001,668,221.97
  5. Step 5: Solve for x
    x = 1,001,668,221.97/31,582.71
  6. Step 6: Final answer
    x = 31,715.71

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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.