Home / 15,186.07-20,956.63-8,380.15

Finding the Fourth Proportional to 15,186.07, 20,956.63 and 8,380.15

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Solution

The fourth proportional to 15,186.07, 20,956.63 and 8,380.15 is: 11,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.07 : 20,956.63 = 8,380.15 : x
  2. Step 2: Convert to fraction form
    15,186.07/20,956.63 = 8,380.15/x
  3. Step 3: Cross multiply
    15,186.07x = 20,956.63 × 8,380.15
  4. Step 4: Simplify right side
    15,186.07x = 175,619,702.89
  5. Step 5: Solve for x
    x = 175,619,702.89/15,186.07
  6. Step 6: Final answer
    x = 11,564.53

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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.