Home / 13,213.74-18,232.11-7,621.50

Finding the Fourth Proportional to 13,213.74, 18,232.11 and 7,621.50

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Solution

The fourth proportional to 13,213.74, 18,232.11 and 7,621.50 is: 10,516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.74 : 18,232.11 = 7,621.50 : x
  2. Step 2: Convert to fraction form
    13,213.74/18,232.11 = 7,621.50/x
  3. Step 3: Cross multiply
    13,213.74x = 18,232.11 × 7,621.50
  4. Step 4: Simplify right side
    13,213.74x = 138,956,026.37
  5. Step 5: Solve for x
    x = 138,956,026.37/13,213.74
  6. Step 6: Final answer
    x = 10,516.03

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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.