Home / 12,003.58-18,008.40-8,500.45

Finding the Fourth Proportional to 12,003.58, 18,008.40 and 8,500.45

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Solution

The fourth proportional to 12,003.58, 18,008.40 and 8,500.45 is: 12,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.58 : 18,008.40 = 8,500.45 : x
  2. Step 2: Convert to fraction form
    12,003.58/18,008.40 = 8,500.45/x
  3. Step 3: Cross multiply
    12,003.58x = 18,008.40 × 8,500.45
  4. Step 4: Simplify right side
    12,003.58x = 153,079,503.78
  5. Step 5: Solve for x
    x = 153,079,503.78/12,003.58
  6. Step 6: Final answer
    x = 12,752.82

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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.