Home / 11,145.58-15,381.02-6,109.69

Finding the Fourth Proportional to 11,145.58, 15,381.02 and 6,109.69

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Solution

The fourth proportional to 11,145.58, 15,381.02 and 6,109.69 is: 8,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.58 : 15,381.02 = 6,109.69 : x
  2. Step 2: Convert to fraction form
    11,145.58/15,381.02 = 6,109.69/x
  3. Step 3: Cross multiply
    11,145.58x = 15,381.02 × 6,109.69
  4. Step 4: Simplify right side
    11,145.58x = 93,973,264.08
  5. Step 5: Solve for x
    x = 93,973,264.08/11,145.58
  6. Step 6: Final answer
    x = 8,431.44

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Double 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.