Home / 31,499.21-47,257.34-11,779.76

Finding the Fourth Proportional to 31,499.21, 47,257.34 and 11,779.76

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Solution

The fourth proportional to 31,499.21, 47,257.34 and 11,779.76 is: 17,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,499.21 : 47,257.34 = 11,779.76 : x
  2. Step 2: Convert to fraction form
    31,499.21/47,257.34 = 11,779.76/x
  3. Step 3: Cross multiply
    31,499.21x = 47,257.34 × 11,779.76
  4. Step 4: Simplify right side
    31,499.21x = 556,679,828.25
  5. Step 5: Solve for x
    x = 556,679,828.25/31,499.21
  6. Step 6: Final answer
    x = 17,672.82

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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.