Home / 20,168.61-30,256.17-8,485.17

Finding the Fourth Proportional to 20,168.61, 30,256.17 and 8,485.17

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Solution

The fourth proportional to 20,168.61, 30,256.17 and 8,485.17 is: 12,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.61 : 30,256.17 = 8,485.17 : x
  2. Step 2: Convert to fraction form
    20,168.61/30,256.17 = 8,485.17/x
  3. Step 3: Cross multiply
    20,168.61x = 30,256.17 × 8,485.17
  4. Step 4: Simplify right side
    20,168.61x = 256,728,746.00
  5. Step 5: Solve for x
    x = 256,728,746.00/20,168.61
  6. Step 6: Final answer
    x = 12,729.12

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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.