Home / 30,906.52-42,634.56-18,810.70

Finding the Fourth Proportional to 30,906.52, 42,634.56 and 18,810.70

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Solution

The fourth proportional to 30,906.52, 42,634.56 and 18,810.70 is: 25,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.52 : 42,634.56 = 18,810.70 : x
  2. Step 2: Convert to fraction form
    30,906.52/42,634.56 = 18,810.70/x
  3. Step 3: Cross multiply
    30,906.52x = 42,634.56 × 18,810.70
  4. Step 4: Simplify right side
    30,906.52x = 801,985,917.79
  5. Step 5: Solve for x
    x = 801,985,917.79/30,906.52
  6. Step 6: Final answer
    x = 25,948.76

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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.