Home / 10,021.20-15,021.78-4,746.84

Finding the Fourth Proportional to 10,021.20, 15,021.78 and 4,746.84

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Solution

The fourth proportional to 10,021.20, 15,021.78 and 4,746.84 is: 7,115.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,021.20 : 15,021.78 = 4,746.84 : x
  2. Step 2: Convert to fraction form
    10,021.20/15,021.78 = 4,746.84/x
  3. Step 3: Cross multiply
    10,021.20x = 15,021.78 × 4,746.84
  4. Step 4: Simplify right side
    10,021.20x = 71,305,986.18
  5. Step 5: Solve for x
    x = 71,305,986.18/10,021.20
  6. Step 6: Final answer
    x = 7,115.51

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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.