Home / 8,715.04-12,021.32-7,651.96

Finding the Fourth Proportional to 8,715.04, 12,021.32 and 7,651.96

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Solution

The fourth proportional to 8,715.04, 12,021.32 and 7,651.96 is: 10,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.04 : 12,021.32 = 7,651.96 : x
  2. Step 2: Convert to fraction form
    8,715.04/12,021.32 = 7,651.96/x
  3. Step 3: Cross multiply
    8,715.04x = 12,021.32 × 7,651.96
  4. Step 4: Simplify right side
    8,715.04x = 91,986,659.79
  5. Step 5: Solve for x
    x = 91,986,659.79/8,715.04
  6. Step 6: Final answer
    x = 10,554.93

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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.