Home / 9,729.80-13,437.30-7,649.16

Finding the Fourth Proportional to 9,729.80, 13,437.30 and 7,649.16

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Solution

The fourth proportional to 9,729.80, 13,437.30 and 7,649.16 is: 10,563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,729.80 : 13,437.30 = 7,649.16 : x
  2. Step 2: Convert to fraction form
    9,729.80/13,437.30 = 7,649.16/x
  3. Step 3: Cross multiply
    9,729.80x = 13,437.30 × 7,649.16
  4. Step 4: Simplify right side
    9,729.80x = 102,784,057.67
  5. Step 5: Solve for x
    x = 102,784,057.67/9,729.80
  6. Step 6: Final answer
    x = 10,563.84

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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.