Home / 30,634.60-42,274.66-18,717.88

Finding the Fourth Proportional to 30,634.60, 42,274.66 and 18,717.88

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Solution

The fourth proportional to 30,634.60, 42,274.66 and 18,717.88 is: 25,830.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,634.60 : 42,274.66 = 18,717.88 : x
  2. Step 2: Convert to fraction form
    30,634.60/42,274.66 = 18,717.88/x
  3. Step 3: Cross multiply
    30,634.60x = 42,274.66 × 18,717.88
  4. Step 4: Simplify right side
    30,634.60x = 791,292,012.92
  5. Step 5: Solve for x
    x = 791,292,012.92/30,634.60
  6. Step 6: Final answer
    x = 25,830.01

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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.