Home / 20,184.10-30,272.55-12,775.30

Finding the Fourth Proportional to 20,184.10, 30,272.55 and 12,775.30

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Solution

The fourth proportional to 20,184.10, 30,272.55 and 12,775.30 is: 19,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,184.10 : 30,272.55 = 12,775.30 : x
  2. Step 2: Convert to fraction form
    20,184.10/30,272.55 = 12,775.30/x
  3. Step 3: Cross multiply
    20,184.10x = 30,272.55 × 12,775.30
  4. Step 4: Simplify right side
    20,184.10x = 386,740,908.02
  5. Step 5: Solve for x
    x = 386,740,908.02/20,184.10
  6. Step 6: Final answer
    x = 19,160.67

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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.