Home / 12,106.60-18,165.54-7,185.92

Finding the Fourth Proportional to 12,106.60, 18,165.54 and 7,185.92

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Solution

The fourth proportional to 12,106.60, 18,165.54 and 7,185.92 is: 10,782.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.60 : 18,165.54 = 7,185.92 : x
  2. Step 2: Convert to fraction form
    12,106.60/18,165.54 = 7,185.92/x
  3. Step 3: Cross multiply
    12,106.60x = 18,165.54 × 7,185.92
  4. Step 4: Simplify right side
    12,106.60x = 130,536,117.20
  5. Step 5: Solve for x
    x = 130,536,117.20/12,106.60
  6. Step 6: Final answer
    x = 10,782.23

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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.