Home / 10,186.08-15,286.16-4,989.12

Finding the Fourth Proportional to 10,186.08, 15,286.16 and 4,989.12

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Solution

The fourth proportional to 10,186.08, 15,286.16 and 4,989.12 is: 7,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.08 : 15,286.16 = 4,989.12 : x
  2. Step 2: Convert to fraction form
    10,186.08/15,286.16 = 4,989.12/x
  3. Step 3: Cross multiply
    10,186.08x = 15,286.16 × 4,989.12
  4. Step 4: Simplify right side
    10,186.08x = 76,264,486.58
  5. Step 5: Solve for x
    x = 76,264,486.58/10,186.08
  6. Step 6: Final answer
    x = 7,487.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.