Home / 19,100.20-28,650.14-7,421.64

Finding the Fourth Proportional to 19,100.20, 28,650.14 and 7,421.64

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Solution

The fourth proportional to 19,100.20, 28,650.14 and 7,421.64 is: 11,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.20 : 28,650.14 = 7,421.64 : x
  2. Step 2: Convert to fraction form
    19,100.20/28,650.14 = 7,421.64/x
  3. Step 3: Cross multiply
    19,100.20x = 28,650.14 × 7,421.64
  4. Step 4: Simplify right side
    19,100.20x = 212,631,025.03
  5. Step 5: Solve for x
    x = 212,631,025.03/19,100.20
  6. Step 6: Final answer
    x = 11,132.40

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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.