Home / 31,319.42-43,220.78-17,172.22

Finding the Fourth Proportional to 31,319.42, 43,220.78 and 17,172.22

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Solution

The fourth proportional to 31,319.42, 43,220.78 and 17,172.22 is: 23,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.42 : 43,220.78 = 17,172.22 : x
  2. Step 2: Convert to fraction form
    31,319.42/43,220.78 = 17,172.22/x
  3. Step 3: Cross multiply
    31,319.42x = 43,220.78 × 17,172.22
  4. Step 4: Simplify right side
    31,319.42x = 742,196,742.73
  5. Step 5: Solve for x
    x = 742,196,742.73/31,319.42
  6. Step 6: Final answer
    x = 23,697.65

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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.