Home / 11,420.32-15,747.92-8,897.96

Finding the Fourth Proportional to 11,420.32, 15,747.92 and 8,897.96

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Solution

The fourth proportional to 11,420.32, 15,747.92 and 8,897.96 is: 12,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.32 : 15,747.92 = 8,897.96 : x
  2. Step 2: Convert to fraction form
    11,420.32/15,747.92 = 8,897.96/x
  3. Step 3: Cross multiply
    11,420.32x = 15,747.92 × 8,897.96
  4. Step 4: Simplify right side
    11,420.32x = 140,124,362.24
  5. Step 5: Solve for x
    x = 140,124,362.24/11,420.32
  6. Step 6: Final answer
    x = 12,269.74

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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.