Home / 30,703.97-42,376.64-17,781.36

Finding the Fourth Proportional to 30,703.97, 42,376.64 and 17,781.36

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Solution

The fourth proportional to 30,703.97, 42,376.64 and 17,781.36 is: 24,541.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,703.97 : 42,376.64 = 17,781.36 : x
  2. Step 2: Convert to fraction form
    30,703.97/42,376.64 = 17,781.36/x
  3. Step 3: Cross multiply
    30,703.97x = 42,376.64 × 17,781.36
  4. Step 4: Simplify right side
    30,703.97x = 753,514,202.52
  5. Step 5: Solve for x
    x = 753,514,202.52/30,703.97
  6. Step 6: Final answer
    x = 24,541.27

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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.