Home / 9,729.12-13,412.40-8,043.36

Finding the Fourth Proportional to 9,729.12, 13,412.40 and 8,043.36

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Solution

The fourth proportional to 9,729.12, 13,412.40 and 8,043.36 is: 11,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,729.12 : 13,412.40 = 8,043.36 : x
  2. Step 2: Convert to fraction form
    9,729.12/13,412.40 = 8,043.36/x
  3. Step 3: Cross multiply
    9,729.12x = 13,412.40 × 8,043.36
  4. Step 4: Simplify right side
    9,729.12x = 107,880,761.66
  5. Step 5: Solve for x
    x = 107,880,761.66/9,729.12
  6. Step 6: Final answer
    x = 11,088.44

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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.