Home / 13,878.92-19,146.50-8,499.72

Finding the Fourth Proportional to 13,878.92, 19,146.50 and 8,499.72

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Solution

The fourth proportional to 13,878.92, 19,146.50 and 8,499.72 is: 11,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.92 : 19,146.50 = 8,499.72 : x
  2. Step 2: Convert to fraction form
    13,878.92/19,146.50 = 8,499.72/x
  3. Step 3: Cross multiply
    13,878.92x = 19,146.50 × 8,499.72
  4. Step 4: Simplify right side
    13,878.92x = 162,739,888.98
  5. Step 5: Solve for x
    x = 162,739,888.98/13,878.92
  6. Step 6: Final answer
    x = 11,725.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.