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Finding the Fourth Proportional to 31,903.79, 44,008.25 and 21,712.37

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Solution

The fourth proportional to 31,903.79, 44,008.25 and 21,712.37 is: 29,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,903.79 : 44,008.25 = 21,712.37 : x
  2. Step 2: Convert to fraction form
    31,903.79/44,008.25 = 21,712.37/x
  3. Step 3: Cross multiply
    31,903.79x = 44,008.25 × 21,712.37
  4. Step 4: Simplify right side
    31,903.79x = 955,523,078.45
  5. Step 5: Solve for x
    x = 955,523,078.45/31,903.79
  6. Step 6: Final answer
    x = 29,950.15

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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.