Home / 20,070.74-30,099.73-18,760.36

Finding the Fourth Proportional to 20,070.74, 30,099.73 and 18,760.36

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Solution

The fourth proportional to 20,070.74, 30,099.73 and 18,760.36 is: 28,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.74 : 30,099.73 = 18,760.36 : x
  2. Step 2: Convert to fraction form
    20,070.74/30,099.73 = 18,760.36/x
  3. Step 3: Cross multiply
    20,070.74x = 30,099.73 × 18,760.36
  4. Step 4: Simplify right side
    20,070.74x = 564,681,687.40
  5. Step 5: Solve for x
    x = 564,681,687.40/20,070.74
  6. Step 6: Final answer
    x = 28,134.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.