Home / 12,555.72-18,820.21-5,967.99

Finding the Fourth Proportional to 12,555.72, 18,820.21 and 5,967.99

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Solution

The fourth proportional to 12,555.72, 18,820.21 and 5,967.99 is: 8,945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.72 : 18,820.21 = 5,967.99 : x
  2. Step 2: Convert to fraction form
    12,555.72/18,820.21 = 5,967.99/x
  3. Step 3: Cross multiply
    12,555.72x = 18,820.21 × 5,967.99
  4. Step 4: Simplify right side
    12,555.72x = 112,318,701.14
  5. Step 5: Solve for x
    x = 112,318,701.14/12,555.72
  6. Step 6: Final answer
    x = 8,945.62

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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.