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Finding the Fourth Proportional to 12,103.20, 18,151.20 and 4,703.40

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Solution

The fourth proportional to 12,103.20, 18,151.20 and 4,703.40 is: 7,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.20 : 18,151.20 = 4,703.40 : x
  2. Step 2: Convert to fraction form
    12,103.20/18,151.20 = 4,703.40/x
  3. Step 3: Cross multiply
    12,103.20x = 18,151.20 × 4,703.40
  4. Step 4: Simplify right side
    12,103.20x = 85,372,354.08
  5. Step 5: Solve for x
    x = 85,372,354.08/12,103.20
  6. Step 6: Final answer
    x = 7,053.70

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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.