Home / 9,421.86-13,002.21-5,230.92

Finding the Fourth Proportional to 9,421.86, 13,002.21 and 5,230.92

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Solution

The fourth proportional to 9,421.86, 13,002.21 and 5,230.92 is: 7,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.86 : 13,002.21 = 5,230.92 : x
  2. Step 2: Convert to fraction form
    9,421.86/13,002.21 = 5,230.92/x
  3. Step 3: Cross multiply
    9,421.86x = 13,002.21 × 5,230.92
  4. Step 4: Simplify right side
    9,421.86x = 68,013,520.33
  5. Step 5: Solve for x
    x = 68,013,520.33/9,421.86
  6. Step 6: Final answer
    x = 7,218.69

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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.