Home / 28,518.08-42,780.64-9,801.92

Finding the Fourth Proportional to 28,518.08, 42,780.64 and 9,801.92

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Solution

The fourth proportional to 28,518.08, 42,780.64 and 9,801.92 is: 14,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.08 : 42,780.64 = 9,801.92 : x
  2. Step 2: Convert to fraction form
    28,518.08/42,780.64 = 9,801.92/x
  3. Step 3: Cross multiply
    28,518.08x = 42,780.64 × 9,801.92
  4. Step 4: Simplify right side
    28,518.08x = 419,332,410.83
  5. Step 5: Solve for x
    x = 419,332,410.83/28,518.08
  6. Step 6: Final answer
    x = 14,704.09

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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.