Home / 28,008.08-42,020.32-8,287.16

Finding the Fourth Proportional to 28,008.08, 42,020.32 and 8,287.16

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Solution

The fourth proportional to 28,008.08, 42,020.32 and 8,287.16 is: 12,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.08 : 42,020.32 = 8,287.16 : x
  2. Step 2: Convert to fraction form
    28,008.08/42,020.32 = 8,287.16/x
  3. Step 3: Cross multiply
    28,008.08x = 42,020.32 × 8,287.16
  4. Step 4: Simplify right side
    28,008.08x = 348,229,115.09
  5. Step 5: Solve for x
    x = 348,229,115.09/28,008.08
  6. Step 6: Final answer
    x = 12,433.17

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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.