Home / 11,186.80-15,436.58-6,470.16

Finding the Fourth Proportional to 11,186.80, 15,436.58 and 6,470.16

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Solution

The fourth proportional to 11,186.80, 15,436.58 and 6,470.16 is: 8,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,186.80 : 15,436.58 = 6,470.16 : x
  2. Step 2: Convert to fraction form
    11,186.80/15,436.58 = 6,470.16/x
  3. Step 3: Cross multiply
    11,186.80x = 15,436.58 × 6,470.16
  4. Step 4: Simplify right side
    11,186.80x = 99,877,142.45
  5. Step 5: Solve for x
    x = 99,877,142.45/11,186.80
  6. Step 6: Final answer
    x = 8,928.12

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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.