Home / 38,972-58,440.84-12,311.36

Finding the Fourth Proportional to 38,972, 58,440.84 and 12,311.36

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Solution

The fourth proportional to 38,972, 58,440.84 and 12,311.36 is: 18,461.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,972 : 58,440.84 = 12,311.36 : x
  2. Step 2: Convert to fraction form
    38,972/58,440.84 = 12,311.36/x
  3. Step 3: Cross multiply
    38,972x = 58,440.84 × 12,311.36
  4. Step 4: Simplify right side
    38,972x = 719,486,219.94
  5. Step 5: Solve for x
    x = 719,486,219.94/38,972
  6. Step 6: Final answer
    x = 18,461.62

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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.