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Finding the Fourth Proportional to 34,295.81, 47,335.79 and 20,867.63

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Solution

The fourth proportional to 34,295.81, 47,335.79 and 20,867.63 is: 28,801.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,295.81 : 47,335.79 = 20,867.63 : x
  2. Step 2: Convert to fraction form
    34,295.81/47,335.79 = 20,867.63/x
  3. Step 3: Cross multiply
    34,295.81x = 47,335.79 × 20,867.63
  4. Step 4: Simplify right side
    34,295.81x = 987,785,566.97
  5. Step 5: Solve for x
    x = 987,785,566.97/34,295.81
  6. Step 6: Final answer
    x = 28,801.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.