Home / 12,389.36-18,586.88-5,370.55

Finding the Fourth Proportional to 12,389.36, 18,586.88 and 5,370.55

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Solution

The fourth proportional to 12,389.36, 18,586.88 and 5,370.55 is: 8,057.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.36 : 18,586.88 = 5,370.55 : x
  2. Step 2: Convert to fraction form
    12,389.36/18,586.88 = 5,370.55/x
  3. Step 3: Cross multiply
    12,389.36x = 18,586.88 × 5,370.55
  4. Step 4: Simplify right side
    12,389.36x = 99,821,768.38
  5. Step 5: Solve for x
    x = 99,821,768.38/12,389.36
  6. Step 6: Final answer
    x = 8,057.06

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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.