Home / 12,817.26-17,688.24-7,439.28

Finding the Fourth Proportional to 12,817.26, 17,688.24 and 7,439.28

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Solution

The fourth proportional to 12,817.26, 17,688.24 and 7,439.28 is: 10,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.26 : 17,688.24 = 7,439.28 : x
  2. Step 2: Convert to fraction form
    12,817.26/17,688.24 = 7,439.28/x
  3. Step 3: Cross multiply
    12,817.26x = 17,688.24 × 7,439.28
  4. Step 4: Simplify right side
    12,817.26x = 131,587,770.07
  5. Step 5: Solve for x
    x = 131,587,770.07/12,817.26
  6. Step 6: Final answer
    x = 10,266.45

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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.