Home / 9,669.80-13,339.58-6,311.06

Finding the Fourth Proportional to 9,669.80, 13,339.58 and 6,311.06

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Solution

The fourth proportional to 9,669.80, 13,339.58 and 6,311.06 is: 8,706.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,669.80 : 13,339.58 = 6,311.06 : x
  2. Step 2: Convert to fraction form
    9,669.80/13,339.58 = 6,311.06/x
  3. Step 3: Cross multiply
    9,669.80x = 13,339.58 × 6,311.06
  4. Step 4: Simplify right side
    9,669.80x = 84,186,889.75
  5. Step 5: Solve for x
    x = 84,186,889.75/9,669.80
  6. Step 6: Final answer
    x = 8,706.17

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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.