Home / 15,516.23-21,412.82-8,442.77

Finding the Fourth Proportional to 15,516.23, 21,412.82 and 8,442.77

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Solution

The fourth proportional to 15,516.23, 21,412.82 and 8,442.77 is: 11,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.23 : 21,412.82 = 8,442.77 : x
  2. Step 2: Convert to fraction form
    15,516.23/21,412.82 = 8,442.77/x
  3. Step 3: Cross multiply
    15,516.23x = 21,412.82 × 8,442.77
  4. Step 4: Simplify right side
    15,516.23x = 180,783,428.35
  5. Step 5: Solve for x
    x = 180,783,428.35/15,516.23
  6. Step 6: Final answer
    x = 11,651.25

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Half scale
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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.