Home / 9,193.40-13,790.10-8,172.80

Finding the Fourth Proportional to 9,193.40, 13,790.10 and 8,172.80

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Solution

The fourth proportional to 9,193.40, 13,790.10 and 8,172.80 is: 12,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,193.40 : 13,790.10 = 8,172.80 : x
  2. Step 2: Convert to fraction form
    9,193.40/13,790.10 = 8,172.80/x
  3. Step 3: Cross multiply
    9,193.40x = 13,790.10 × 8,172.80
  4. Step 4: Simplify right side
    9,193.40x = 112,703,729.28
  5. Step 5: Solve for x
    x = 112,703,729.28/9,193.40
  6. Step 6: Final answer
    x = 12,259.20

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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.