Home / 11,385.32-15,711.84-6,349.87

Finding the Fourth Proportional to 11,385.32, 15,711.84 and 6,349.87

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Solution

The fourth proportional to 11,385.32, 15,711.84 and 6,349.87 is: 8,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.32 : 15,711.84 = 6,349.87 : x
  2. Step 2: Convert to fraction form
    11,385.32/15,711.84 = 6,349.87/x
  3. Step 3: Cross multiply
    11,385.32x = 15,711.84 × 6,349.87
  4. Step 4: Simplify right side
    11,385.32x = 99,768,078.37
  5. Step 5: Solve for x
    x = 99,768,078.37/11,385.32
  6. Step 6: Final answer
    x = 8,762.87

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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.