Home / 10,121.40-15,166.72-7,165.88

Finding the Fourth Proportional to 10,121.40, 15,166.72 and 7,165.88

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Solution

The fourth proportional to 10,121.40, 15,166.72 and 7,165.88 is: 10,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.40 : 15,166.72 = 7,165.88 : x
  2. Step 2: Convert to fraction form
    10,121.40/15,166.72 = 7,165.88/x
  3. Step 3: Cross multiply
    10,121.40x = 15,166.72 × 7,165.88
  4. Step 4: Simplify right side
    10,121.40x = 108,682,895.51
  5. Step 5: Solve for x
    x = 108,682,895.51/10,121.40
  6. Step 6: Final answer
    x = 10,737.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.