Home / 12,533.60-18,778.80-8,148.80

Finding the Fourth Proportional to 12,533.60, 18,778.80 and 8,148.80

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Solution

The fourth proportional to 12,533.60, 18,778.80 and 8,148.80 is: 12,209.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,533.60 : 18,778.80 = 8,148.80 : x
  2. Step 2: Convert to fraction form
    12,533.60/18,778.80 = 8,148.80/x
  3. Step 3: Cross multiply
    12,533.60x = 18,778.80 × 8,148.80
  4. Step 4: Simplify right side
    12,533.60x = 153,024,685.44
  5. Step 5: Solve for x
    x = 153,024,685.44/12,533.60
  6. Step 6: Final answer
    x = 12,209.16

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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.