Home / 13,318.26-18,386.37-9,706.20

Finding the Fourth Proportional to 13,318.26, 18,386.37 and 9,706.20

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Solution

The fourth proportional to 13,318.26, 18,386.37 and 9,706.20 is: 13,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.26 : 18,386.37 = 9,706.20 : x
  2. Step 2: Convert to fraction form
    13,318.26/18,386.37 = 9,706.20/x
  3. Step 3: Cross multiply
    13,318.26x = 18,386.37 × 9,706.20
  4. Step 4: Simplify right side
    13,318.26x = 178,461,784.49
  5. Step 5: Solve for x
    x = 178,461,784.49/13,318.26
  6. Step 6: Final answer
    x = 13,399.78

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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.