Home / 31,663.17-43,687.71-18,913.86

Finding the Fourth Proportional to 31,663.17, 43,687.71 and 18,913.86

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Solution

The fourth proportional to 31,663.17, 43,687.71 and 18,913.86 is: 26,096.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.17 : 43,687.71 = 18,913.86 : x
  2. Step 2: Convert to fraction form
    31,663.17/43,687.71 = 18,913.86/x
  3. Step 3: Cross multiply
    31,663.17x = 43,687.71 × 18,913.86
  4. Step 4: Simplify right side
    31,663.17x = 826,303,230.66
  5. Step 5: Solve for x
    x = 826,303,230.66/31,663.17
  6. Step 6: Final answer
    x = 26,096.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.