Home / 47,009.20-70,520.40-13,731.72

Finding the Fourth Proportional to 47,009.20, 70,520.40 and 13,731.72

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Solution

The fourth proportional to 47,009.20, 70,520.40 and 13,731.72 is: 20,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,009.20 : 70,520.40 = 13,731.72 : x
  2. Step 2: Convert to fraction form
    47,009.20/70,520.40 = 13,731.72/x
  3. Step 3: Cross multiply
    47,009.20x = 70,520.40 × 13,731.72
  4. Step 4: Simplify right side
    47,009.20x = 968,366,387.09
  5. Step 5: Solve for x
    x = 968,366,387.09/47,009.20
  6. Step 6: Final answer
    x = 20,599.51

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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.