Home / 30,099.22-45,154.86-20,743.72

Finding the Fourth Proportional to 30,099.22, 45,154.86 and 20,743.72

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Solution

The fourth proportional to 30,099.22, 45,154.86 and 20,743.72 is: 31,119.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,099.22 : 45,154.86 = 20,743.72 : x
  2. Step 2: Convert to fraction form
    30,099.22/45,154.86 = 20,743.72/x
  3. Step 3: Cross multiply
    30,099.22x = 45,154.86 × 20,743.72
  4. Step 4: Simplify right side
    30,099.22x = 936,679,772.48
  5. Step 5: Solve for x
    x = 936,679,772.48/30,099.22
  6. Step 6: Final answer
    x = 31,119.74

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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.