Home / 31,608.90-47,420.19-16,815.67

Finding the Fourth Proportional to 31,608.90, 47,420.19 and 16,815.67

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Solution

The fourth proportional to 31,608.90, 47,420.19 and 16,815.67 is: 25,227.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,608.90 : 47,420.19 = 16,815.67 : x
  2. Step 2: Convert to fraction form
    31,608.90/47,420.19 = 16,815.67/x
  3. Step 3: Cross multiply
    31,608.90x = 47,420.19 × 16,815.67
  4. Step 4: Simplify right side
    31,608.90x = 797,402,325.65
  5. Step 5: Solve for x
    x = 797,402,325.65/31,608.90
  6. Step 6: Final answer
    x = 25,227.14

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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.