Home / 12,776.88-19,140.36-8,381.04

Finding the Fourth Proportional to 12,776.88, 19,140.36 and 8,381.04

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Solution

The fourth proportional to 12,776.88, 19,140.36 and 8,381.04 is: 12,555.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.88 : 19,140.36 = 8,381.04 : x
  2. Step 2: Convert to fraction form
    12,776.88/19,140.36 = 8,381.04/x
  3. Step 3: Cross multiply
    12,776.88x = 19,140.36 × 8,381.04
  4. Step 4: Simplify right side
    12,776.88x = 160,416,122.77
  5. Step 5: Solve for x
    x = 160,416,122.77/12,776.88
  6. Step 6: Final answer
    x = 12,555.19

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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.