Home / 12,149.96-18,221.66-5,130.02

Finding the Fourth Proportional to 12,149.96, 18,221.66 and 5,130.02

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Solution

The fourth proportional to 12,149.96, 18,221.66 and 5,130.02 is: 7,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.96 : 18,221.66 = 5,130.02 : x
  2. Step 2: Convert to fraction form
    12,149.96/18,221.66 = 5,130.02/x
  3. Step 3: Cross multiply
    12,149.96x = 18,221.66 × 5,130.02
  4. Step 4: Simplify right side
    12,149.96x = 93,477,389.12
  5. Step 5: Solve for x
    x = 93,477,389.12/12,149.96
  6. Step 6: Final answer
    x = 7,693.64

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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.