Home / 18,911.12-28,384.18-9,557.72

Finding the Fourth Proportional to 18,911.12, 28,384.18 and 9,557.72

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Solution

The fourth proportional to 18,911.12, 28,384.18 and 9,557.72 is: 14,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.12 : 28,384.18 = 9,557.72 : x
  2. Step 2: Convert to fraction form
    18,911.12/28,384.18 = 9,557.72/x
  3. Step 3: Cross multiply
    18,911.12x = 28,384.18 × 9,557.72
  4. Step 4: Simplify right side
    18,911.12x = 271,288,044.87
  5. Step 5: Solve for x
    x = 271,288,044.87/18,911.12
  6. Step 6: Final answer
    x = 14,345.42

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1.5x scale

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.