Home / 19,977.20-29,956.22-9,438.45

Finding the Fourth Proportional to 19,977.20, 29,956.22 and 9,438.45

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Solution

The fourth proportional to 19,977.20, 29,956.22 and 9,438.45 is: 14,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.20 : 29,956.22 = 9,438.45 : x
  2. Step 2: Convert to fraction form
    19,977.20/29,956.22 = 9,438.45/x
  3. Step 3: Cross multiply
    19,977.20x = 29,956.22 × 9,438.45
  4. Step 4: Simplify right side
    19,977.20x = 282,740,284.66
  5. Step 5: Solve for x
    x = 282,740,284.66/19,977.20
  6. Step 6: Final answer
    x = 14,153.15

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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.