Home / 12,155.08-18,232.74-3,390.64

Finding the Fourth Proportional to 12,155.08, 18,232.74 and 3,390.64

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Solution

The fourth proportional to 12,155.08, 18,232.74 and 3,390.64 is: 5,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.08 : 18,232.74 = 3,390.64 : x
  2. Step 2: Convert to fraction form
    12,155.08/18,232.74 = 3,390.64/x
  3. Step 3: Cross multiply
    12,155.08x = 18,232.74 × 3,390.64
  4. Step 4: Simplify right side
    12,155.08x = 61,820,657.55
  5. Step 5: Solve for x
    x = 61,820,657.55/12,155.08
  6. Step 6: Final answer
    x = 5,085.99

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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.