Home / 13,700.90-20,513.18-8,758.34

Finding the Fourth Proportional to 13,700.90, 20,513.18 and 8,758.34

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Solution

The fourth proportional to 13,700.90, 20,513.18 and 8,758.34 is: 13,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.90 : 20,513.18 = 8,758.34 : x
  2. Step 2: Convert to fraction form
    13,700.90/20,513.18 = 8,758.34/x
  3. Step 3: Cross multiply
    13,700.90x = 20,513.18 × 8,758.34
  4. Step 4: Simplify right side
    13,700.90x = 179,661,404.92
  5. Step 5: Solve for x
    x = 179,661,404.92/13,700.90
  6. Step 6: Final answer
    x = 13,113.11

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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.