Home / 31,730.08-47,543.28-20,005.60

Finding the Fourth Proportional to 31,730.08, 47,543.28 and 20,005.60

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Solution

The fourth proportional to 31,730.08, 47,543.28 and 20,005.60 is: 29,975.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,730.08 : 47,543.28 = 20,005.60 : x
  2. Step 2: Convert to fraction form
    31,730.08/47,543.28 = 20,005.60/x
  3. Step 3: Cross multiply
    31,730.08x = 47,543.28 × 20,005.60
  4. Step 4: Simplify right side
    31,730.08x = 951,131,842.37
  5. Step 5: Solve for x
    x = 951,131,842.37/31,730.08
  6. Step 6: Final answer
    x = 29,975.72

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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.