Home / 20,148.88-30,192.54-8,455.72

Finding the Fourth Proportional to 20,148.88, 30,192.54 and 8,455.72

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Solution

The fourth proportional to 20,148.88, 30,192.54 and 8,455.72 is: 12,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.88 : 30,192.54 = 8,455.72 : x
  2. Step 2: Convert to fraction form
    20,148.88/30,192.54 = 8,455.72/x
  3. Step 3: Cross multiply
    20,148.88x = 30,192.54 × 8,455.72
  4. Step 4: Simplify right side
    20,148.88x = 255,299,557.14
  5. Step 5: Solve for x
    x = 255,299,557.14/20,148.88
  6. Step 6: Final answer
    x = 12,670.66

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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.