Home / 12,157.76-16,777.50-7,124.54

Finding the Fourth Proportional to 12,157.76, 16,777.50 and 7,124.54

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Solution

The fourth proportional to 12,157.76, 16,777.50 and 7,124.54 is: 9,831.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.76 : 16,777.50 = 7,124.54 : x
  2. Step 2: Convert to fraction form
    12,157.76/16,777.50 = 7,124.54/x
  3. Step 3: Cross multiply
    12,157.76x = 16,777.50 × 7,124.54
  4. Step 4: Simplify right side
    12,157.76x = 119,531,969.85
  5. Step 5: Solve for x
    x = 119,531,969.85/12,157.76
  6. Step 6: Final answer
    x = 9,831.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.