Home / 15,234.18-21,022.62-8,861.28

Finding the Fourth Proportional to 15,234.18, 21,022.62 and 8,861.28

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Solution

The fourth proportional to 15,234.18, 21,022.62 and 8,861.28 is: 12,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,234.18 : 21,022.62 = 8,861.28 : x
  2. Step 2: Convert to fraction form
    15,234.18/21,022.62 = 8,861.28/x
  3. Step 3: Cross multiply
    15,234.18x = 21,022.62 × 8,861.28
  4. Step 4: Simplify right side
    15,234.18x = 186,287,322.15
  5. Step 5: Solve for x
    x = 186,287,322.15/15,234.18
  6. Step 6: Final answer
    x = 12,228.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.