Home / 12,160.86-18,228.75-8,820.74

Finding the Fourth Proportional to 12,160.86, 18,228.75 and 8,820.74

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Solution

The fourth proportional to 12,160.86, 18,228.75 and 8,820.74 is: 13,222.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.86 : 18,228.75 = 8,820.74 : x
  2. Step 2: Convert to fraction form
    12,160.86/18,228.75 = 8,820.74/x
  3. Step 3: Cross multiply
    12,160.86x = 18,228.75 × 8,820.74
  4. Step 4: Simplify right side
    12,160.86x = 160,791,076.77
  5. Step 5: Solve for x
    x = 160,791,076.77/12,160.86
  6. Step 6: Final answer
    x = 13,222.02

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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.