Home / 47,189.43-70,784.15-12,129.12

Finding the Fourth Proportional to 47,189.43, 70,784.15 and 12,129.12

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Solution

The fourth proportional to 47,189.43, 70,784.15 and 12,129.12 is: 18,193.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,189.43 : 70,784.15 = 12,129.12 : x
  2. Step 2: Convert to fraction form
    47,189.43/70,784.15 = 12,129.12/x
  3. Step 3: Cross multiply
    47,189.43x = 70,784.15 × 12,129.12
  4. Step 4: Simplify right side
    47,189.43x = 858,549,388.80
  5. Step 5: Solve for x
    x = 858,549,388.80/47,189.43
  6. Step 6: Final answer
    x = 18,193.68

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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.