Home / 31,489.40-43,455.47-17,149.34

Finding the Fourth Proportional to 31,489.40, 43,455.47 and 17,149.34

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Solution

The fourth proportional to 31,489.40, 43,455.47 and 17,149.34 is: 23,666.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.40 : 43,455.47 = 17,149.34 : x
  2. Step 2: Convert to fraction form
    31,489.40/43,455.47 = 17,149.34/x
  3. Step 3: Cross multiply
    31,489.40x = 43,455.47 × 17,149.34
  4. Step 4: Simplify right side
    31,489.40x = 745,232,326.87
  5. Step 5: Solve for x
    x = 745,232,326.87/31,489.40
  6. Step 6: Final answer
    x = 23,666.14

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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.