Home / 15,299.72-21,111.90-8,583.96

Finding the Fourth Proportional to 15,299.72, 21,111.90 and 8,583.96

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Solution

The fourth proportional to 15,299.72, 21,111.90 and 8,583.96 is: 11,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.72 : 21,111.90 = 8,583.96 : x
  2. Step 2: Convert to fraction form
    15,299.72/21,111.90 = 8,583.96/x
  3. Step 3: Cross multiply
    15,299.72x = 21,111.90 × 8,583.96
  4. Step 4: Simplify right side
    15,299.72x = 181,223,705.12
  5. Step 5: Solve for x
    x = 181,223,705.12/15,299.72
  6. Step 6: Final answer
    x = 11,844.90

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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.