Home / 31,438.51-43,385.15-17,291.35

Finding the Fourth Proportional to 31,438.51, 43,385.15 and 17,291.35

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Solution

The fourth proportional to 31,438.51, 43,385.15 and 17,291.35 is: 23,862.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.51 : 43,385.15 = 17,291.35 : x
  2. Step 2: Convert to fraction form
    31,438.51/43,385.15 = 17,291.35/x
  3. Step 3: Cross multiply
    31,438.51x = 43,385.15 × 17,291.35
  4. Step 4: Simplify right side
    31,438.51x = 750,187,813.45
  5. Step 5: Solve for x
    x = 750,187,813.45/31,438.51
  6. Step 6: Final answer
    x = 23,862.07

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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.