Home / 15,516.72-21,412.34-8,442.98

Finding the Fourth Proportional to 15,516.72, 21,412.34 and 8,442.98

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Solution

The fourth proportional to 15,516.72, 21,412.34 and 8,442.98 is: 11,650.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.72 : 21,412.34 = 8,442.98 : x
  2. Step 2: Convert to fraction form
    15,516.72/21,412.34 = 8,442.98/x
  3. Step 3: Cross multiply
    15,516.72x = 21,412.34 × 8,442.98
  4. Step 4: Simplify right side
    15,516.72x = 180,783,958.37
  5. Step 5: Solve for x
    x = 180,783,958.37/15,516.72
  6. Step 6: Final answer
    x = 11,650.91

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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.