Home / 11,105.34-15,326.04-6,389.52

Finding the Fourth Proportional to 11,105.34, 15,326.04 and 6,389.52

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Solution

The fourth proportional to 11,105.34, 15,326.04 and 6,389.52 is: 8,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.34 : 15,326.04 = 6,389.52 : x
  2. Step 2: Convert to fraction form
    11,105.34/15,326.04 = 6,389.52/x
  3. Step 3: Cross multiply
    11,105.34x = 15,326.04 × 6,389.52
  4. Step 4: Simplify right side
    11,105.34x = 97,926,039.10
  5. Step 5: Solve for x
    x = 97,926,039.10/11,105.34
  6. Step 6: Final answer
    x = 8,817.92

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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.