Home / 12,117.40-18,197.70-8,834.20

Finding the Fourth Proportional to 12,117.40, 18,197.70 and 8,834.20

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Solution

The fourth proportional to 12,117.40, 18,197.70 and 8,834.20 is: 13,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.40 : 18,197.70 = 8,834.20 : x
  2. Step 2: Convert to fraction form
    12,117.40/18,197.70 = 8,834.20/x
  3. Step 3: Cross multiply
    12,117.40x = 18,197.70 × 8,834.20
  4. Step 4: Simplify right side
    12,117.40x = 160,762,121.34
  5. Step 5: Solve for x
    x = 160,762,121.34/12,117.40
  6. Step 6: Final answer
    x = 13,267.05

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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.