Home / 31,890.20-47,852.91-13,165.85

Finding the Fourth Proportional to 31,890.20, 47,852.91 and 13,165.85

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Solution

The fourth proportional to 31,890.20, 47,852.91 and 13,165.85 is: 19,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.20 : 47,852.91 = 13,165.85 : x
  2. Step 2: Convert to fraction form
    31,890.20/47,852.91 = 13,165.85/x
  3. Step 3: Cross multiply
    31,890.20x = 47,852.91 × 13,165.85
  4. Step 4: Simplify right side
    31,890.20x = 630,024,354.76
  5. Step 5: Solve for x
    x = 630,024,354.76/31,890.20
  6. Step 6: Final answer
    x = 19,756.05

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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.