Home / 28,582.93-42,857.08-12,785.02

Finding the Fourth Proportional to 28,582.93, 42,857.08 and 12,785.02

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Solution

The fourth proportional to 28,582.93, 42,857.08 and 12,785.02 is: 19,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.93 : 42,857.08 = 12,785.02 : x
  2. Step 2: Convert to fraction form
    28,582.93/42,857.08 = 12,785.02/x
  3. Step 3: Cross multiply
    28,582.93x = 42,857.08 × 12,785.02
  4. Step 4: Simplify right side
    28,582.93x = 547,928,618.02
  5. Step 5: Solve for x
    x = 547,928,618.02/28,582.93
  6. Step 6: Final answer
    x = 19,169.78

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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.