Home / 47,686.20-71,529.30-12,629.40

Finding the Fourth Proportional to 47,686.20, 71,529.30 and 12,629.40

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Solution

The fourth proportional to 47,686.20, 71,529.30 and 12,629.40 is: 18,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,686.20 : 71,529.30 = 12,629.40 : x
  2. Step 2: Convert to fraction form
    47,686.20/71,529.30 = 12,629.40/x
  3. Step 3: Cross multiply
    47,686.20x = 71,529.30 × 12,629.40
  4. Step 4: Simplify right side
    47,686.20x = 903,372,141.42
  5. Step 5: Solve for x
    x = 903,372,141.42/47,686.20
  6. Step 6: Final answer
    x = 18,944.10

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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.