Home / 12,155.90-18,232.23-3,390.08

Finding the Fourth Proportional to 12,155.90, 18,232.23 and 3,390.08

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Solution

The fourth proportional to 12,155.90, 18,232.23 and 3,390.08 is: 5,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.90 : 18,232.23 = 3,390.08 : x
  2. Step 2: Convert to fraction form
    12,155.90/18,232.23 = 3,390.08/x
  3. Step 3: Cross multiply
    12,155.90x = 18,232.23 × 3,390.08
  4. Step 4: Simplify right side
    12,155.90x = 61,808,718.28
  5. Step 5: Solve for x
    x = 61,808,718.28/12,155.90
  6. Step 6: Final answer
    x = 5,084.67

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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.