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Finding the Fourth Proportional to 31,295.70, 43,187.84 and 16,955.22

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Solution

The fourth proportional to 31,295.70, 43,187.84 and 16,955.22 is: 23,398.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,295.70 : 43,187.84 = 16,955.22 : x
  2. Step 2: Convert to fraction form
    31,295.70/43,187.84 = 16,955.22/x
  3. Step 3: Cross multiply
    31,295.70x = 43,187.84 × 16,955.22
  4. Step 4: Simplify right side
    31,295.70x = 732,259,328.52
  5. Step 5: Solve for x
    x = 732,259,328.52/31,295.70
  6. Step 6: Final answer
    x = 23,398.08

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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.