Home / 13,700.22-20,531.66-7,112.76

Finding the Fourth Proportional to 13,700.22, 20,531.66 and 7,112.76

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Solution

The fourth proportional to 13,700.22, 20,531.66 and 7,112.76 is: 10,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.22 : 20,531.66 = 7,112.76 : x
  2. Step 2: Convert to fraction form
    13,700.22/20,531.66 = 7,112.76/x
  3. Step 3: Cross multiply
    13,700.22x = 20,531.66 × 7,112.76
  4. Step 4: Simplify right side
    13,700.22x = 146,036,769.98
  5. Step 5: Solve for x
    x = 146,036,769.98/13,700.22
  6. Step 6: Final answer
    x = 10,659.45

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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.