Home / 30,694.04-42,360-18,759.68

Finding the Fourth Proportional to 30,694.04, 42,360 and 18,759.68

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Solution

The fourth proportional to 30,694.04, 42,360 and 18,759.68 is: 25,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,694.04 : 42,360 = 18,759.68 : x
  2. Step 2: Convert to fraction form
    30,694.04/42,360 = 18,759.68/x
  3. Step 3: Cross multiply
    30,694.04x = 42,360 × 18,759.68
  4. Step 4: Simplify right side
    30,694.04x = 794,660,044.80
  5. Step 5: Solve for x
    x = 794,660,044.80/30,694.04
  6. Step 6: Final answer
    x = 25,889.72

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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.