Home / 9,938.51-13,708.20-8,436.06

Finding the Fourth Proportional to 9,938.51, 13,708.20 and 8,436.06

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Solution

The fourth proportional to 9,938.51, 13,708.20 and 8,436.06 is: 11,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.51 : 13,708.20 = 8,436.06 : x
  2. Step 2: Convert to fraction form
    9,938.51/13,708.20 = 8,436.06/x
  3. Step 3: Cross multiply
    9,938.51x = 13,708.20 × 8,436.06
  4. Step 4: Simplify right side
    9,938.51x = 115,643,197.69
  5. Step 5: Solve for x
    x = 115,643,197.69/9,938.51
  6. Step 6: Final answer
    x = 11,635.87

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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.