Home / 39,438.74-59,157.03-13,143.98

Finding the Fourth Proportional to 39,438.74, 59,157.03 and 13,143.98

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Solution

The fourth proportional to 39,438.74, 59,157.03 and 13,143.98 is: 19,715.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,438.74 : 59,157.03 = 13,143.98 : x
  2. Step 2: Convert to fraction form
    39,438.74/59,157.03 = 13,143.98/x
  3. Step 3: Cross multiply
    39,438.74x = 59,157.03 × 13,143.98
  4. Step 4: Simplify right side
    39,438.74x = 777,558,819.18
  5. Step 5: Solve for x
    x = 777,558,819.18/39,438.74
  6. Step 6: Final answer
    x = 19,715.61

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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.