Home / 28,234.56-42,345.90-18,209.28

Finding the Fourth Proportional to 28,234.56, 42,345.90 and 18,209.28

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Solution

The fourth proportional to 28,234.56, 42,345.90 and 18,209.28 is: 27,310.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.56 : 42,345.90 = 18,209.28 : x
  2. Step 2: Convert to fraction form
    28,234.56/42,345.90 = 18,209.28/x
  3. Step 3: Cross multiply
    28,234.56x = 42,345.90 × 18,209.28
  4. Step 4: Simplify right side
    28,234.56x = 771,088,349.95
  5. Step 5: Solve for x
    x = 771,088,349.95/28,234.56
  6. Step 6: Final answer
    x = 27,310.09

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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.