Home / 10,186.13-15,279.21-2,790.65

Finding the Fourth Proportional to 10,186.13, 15,279.21 and 2,790.65

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Solution

The fourth proportional to 10,186.13, 15,279.21 and 2,790.65 is: 4,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.13 : 15,279.21 = 2,790.65 : x
  2. Step 2: Convert to fraction form
    10,186.13/15,279.21 = 2,790.65/x
  3. Step 3: Cross multiply
    10,186.13x = 15,279.21 × 2,790.65
  4. Step 4: Simplify right side
    10,186.13x = 42,638,927.39
  5. Step 5: Solve for x
    x = 42,638,927.39/10,186.13
  6. Step 6: Final answer
    x = 4,185.98

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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.