Home / 10,302.12-15,455.79-5,620.86

Finding the Fourth Proportional to 10,302.12, 15,455.79 and 5,620.86

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Solution

The fourth proportional to 10,302.12, 15,455.79 and 5,620.86 is: 8,432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,302.12 : 15,455.79 = 5,620.86 : x
  2. Step 2: Convert to fraction form
    10,302.12/15,455.79 = 5,620.86/x
  3. Step 3: Cross multiply
    10,302.12x = 15,455.79 × 5,620.86
  4. Step 4: Simplify right side
    10,302.12x = 86,874,831.78
  5. Step 5: Solve for x
    x = 86,874,831.78/10,302.12
  6. Step 6: Final answer
    x = 8,432.71

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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.