Home / 13,790.83-19,031.48-8,200.75

Finding the Fourth Proportional to 13,790.83, 19,031.48 and 8,200.75

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Solution

The fourth proportional to 13,790.83, 19,031.48 and 8,200.75 is: 11,317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.83 : 19,031.48 = 8,200.75 : x
  2. Step 2: Convert to fraction form
    13,790.83/19,031.48 = 8,200.75/x
  3. Step 3: Cross multiply
    13,790.83x = 19,031.48 × 8,200.75
  4. Step 4: Simplify right side
    13,790.83x = 156,072,409.61
  5. Step 5: Solve for x
    x = 156,072,409.61/13,790.83
  6. Step 6: Final answer
    x = 11,317.12

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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.