Home / 20,336.89-30,509.61-7,011.12

Finding the Fourth Proportional to 20,336.89, 30,509.61 and 7,011.12

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Solution

The fourth proportional to 20,336.89, 30,509.61 and 7,011.12 is: 10,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.89 : 30,509.61 = 7,011.12 : x
  2. Step 2: Convert to fraction form
    20,336.89/30,509.61 = 7,011.12/x
  3. Step 3: Cross multiply
    20,336.89x = 30,509.61 × 7,011.12
  4. Step 4: Simplify right side
    20,336.89x = 213,906,664.42
  5. Step 5: Solve for x
    x = 213,906,664.42/20,336.89
  6. Step 6: Final answer
    x = 10,518.16

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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.