Home / 20,149.07-30,192.81-8,455.91

Finding the Fourth Proportional to 20,149.07, 30,192.81 and 8,455.91

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Solution

The fourth proportional to 20,149.07, 30,192.81 and 8,455.91 is: 12,670.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.07 : 30,192.81 = 8,455.91 : x
  2. Step 2: Convert to fraction form
    20,149.07/30,192.81 = 8,455.91/x
  3. Step 3: Cross multiply
    20,149.07x = 30,192.81 × 8,455.91
  4. Step 4: Simplify right side
    20,149.07x = 255,307,533.04
  5. Step 5: Solve for x
    x = 255,307,533.04/20,149.07
  6. Step 6: Final answer
    x = 12,670.94

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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.