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Finding the Fourth Proportional to 31,133.80, 46,649.40 and 17,963.20

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Solution

The fourth proportional to 31,133.80, 46,649.40 and 17,963.20 is: 26,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.80 : 46,649.40 = 17,963.20 : x
  2. Step 2: Convert to fraction form
    31,133.80/46,649.40 = 17,963.20/x
  3. Step 3: Cross multiply
    31,133.80x = 46,649.40 × 17,963.20
  4. Step 4: Simplify right side
    31,133.80x = 837,972,502.08
  5. Step 5: Solve for x
    x = 837,972,502.08/31,133.80
  6. Step 6: Final answer
    x = 26,915.20

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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.