Home / 12,355.60-18,533.40-7,106.80

Finding the Fourth Proportional to 12,355.60, 18,533.40 and 7,106.80

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Solution

The fourth proportional to 12,355.60, 18,533.40 and 7,106.80 is: 10,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.60 : 18,533.40 = 7,106.80 : x
  2. Step 2: Convert to fraction form
    12,355.60/18,533.40 = 7,106.80/x
  3. Step 3: Cross multiply
    12,355.60x = 18,533.40 × 7,106.80
  4. Step 4: Simplify right side
    12,355.60x = 131,713,167.12
  5. Step 5: Solve for x
    x = 131,713,167.12/12,355.60
  6. Step 6: Final answer
    x = 10,660.20

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Similar ratio
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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.