Home / 20,935.65-31,360.95-13,013.85

Finding the Fourth Proportional to 20,935.65, 31,360.95 and 13,013.85

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Solution

The fourth proportional to 20,935.65, 31,360.95 and 13,013.85 is: 19,494.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.65 : 31,360.95 = 13,013.85 : x
  2. Step 2: Convert to fraction form
    20,935.65/31,360.95 = 13,013.85/x
  3. Step 3: Cross multiply
    20,935.65x = 31,360.95 × 13,013.85
  4. Step 4: Simplify right side
    20,935.65x = 408,126,699.16
  5. Step 5: Solve for x
    x = 408,126,699.16/20,935.65
  6. Step 6: Final answer
    x = 19,494.34

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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.