Home / 30,485.22-45,688.83-15,691.38

Finding the Fourth Proportional to 30,485.22, 45,688.83 and 15,691.38

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Solution

The fourth proportional to 30,485.22, 45,688.83 and 15,691.38 is: 23,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.22 : 45,688.83 = 15,691.38 : x
  2. Step 2: Convert to fraction form
    30,485.22/45,688.83 = 15,691.38/x
  3. Step 3: Cross multiply
    30,485.22x = 45,688.83 × 15,691.38
  4. Step 4: Simplify right side
    30,485.22x = 716,920,793.29
  5. Step 5: Solve for x
    x = 716,920,793.29/30,485.22
  6. Step 6: Final answer
    x = 23,517.00

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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.