Home / 20,143.07-30,210.04-7,658.66

Finding the Fourth Proportional to 20,143.07, 30,210.04 and 7,658.66

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Solution

The fourth proportional to 20,143.07, 30,210.04 and 7,658.66 is: 11,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.07 : 30,210.04 = 7,658.66 : x
  2. Step 2: Convert to fraction form
    20,143.07/30,210.04 = 7,658.66/x
  3. Step 3: Cross multiply
    20,143.07x = 30,210.04 × 7,658.66
  4. Step 4: Simplify right side
    20,143.07x = 231,368,235.60
  5. Step 5: Solve for x
    x = 231,368,235.60/20,143.07
  6. Step 6: Final answer
    x = 11,486.24

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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.