Home / 12,476.15-17,220.56-7,172.67

Finding the Fourth Proportional to 12,476.15, 17,220.56 and 7,172.67

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Solution

The fourth proportional to 12,476.15, 17,220.56 and 7,172.67 is: 9,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.15 : 17,220.56 = 7,172.67 : x
  2. Step 2: Convert to fraction form
    12,476.15/17,220.56 = 7,172.67/x
  3. Step 3: Cross multiply
    12,476.15x = 17,220.56 × 7,172.67
  4. Step 4: Simplify right side
    12,476.15x = 123,517,358.23
  5. Step 5: Solve for x
    x = 123,517,358.23/12,476.15
  6. Step 6: Final answer
    x = 9,900.28

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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.