Home / 11,385.74-15,709.64-6,909.36

Finding the Fourth Proportional to 11,385.74, 15,709.64 and 6,909.36

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Solution

The fourth proportional to 11,385.74, 15,709.64 and 6,909.36 is: 9,533.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.74 : 15,709.64 = 6,909.36 : x
  2. Step 2: Convert to fraction form
    11,385.74/15,709.64 = 6,909.36/x
  3. Step 3: Cross multiply
    11,385.74x = 15,709.64 × 6,909.36
  4. Step 4: Simplify right side
    11,385.74x = 108,543,558.23
  5. Step 5: Solve for x
    x = 108,543,558.23/11,385.74
  6. Step 6: Final answer
    x = 9,533.29

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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.