Home / 12,372.20-18,533.10-7,677.80

Finding the Fourth Proportional to 12,372.20, 18,533.10 and 7,677.80

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Solution

The fourth proportional to 12,372.20, 18,533.10 and 7,677.80 is: 11,501.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.20 : 18,533.10 = 7,677.80 : x
  2. Step 2: Convert to fraction form
    12,372.20/18,533.10 = 7,677.80/x
  3. Step 3: Cross multiply
    12,372.20x = 18,533.10 × 7,677.80
  4. Step 4: Simplify right side
    12,372.20x = 142,293,435.18
  5. Step 5: Solve for x
    x = 142,293,435.18/12,372.20
  6. Step 6: Final answer
    x = 11,501.06

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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.