Home / 31,689.85-47,522.01-11,957.66

Finding the Fourth Proportional to 31,689.85, 47,522.01 and 11,957.66

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Solution

The fourth proportional to 31,689.85, 47,522.01 and 11,957.66 is: 17,931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.85 : 47,522.01 = 11,957.66 : x
  2. Step 2: Convert to fraction form
    31,689.85/47,522.01 = 11,957.66/x
  3. Step 3: Cross multiply
    31,689.85x = 47,522.01 × 11,957.66
  4. Step 4: Simplify right side
    31,689.85x = 568,252,038.10
  5. Step 5: Solve for x
    x = 568,252,038.10/31,689.85
  6. Step 6: Final answer
    x = 17,931.67

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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.