Home / 12,003.99-18,015.61-5,430.75

Finding the Fourth Proportional to 12,003.99, 18,015.61 and 5,430.75

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Solution

The fourth proportional to 12,003.99, 18,015.61 and 5,430.75 is: 8,150.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.99 : 18,015.61 = 5,430.75 : x
  2. Step 2: Convert to fraction form
    12,003.99/18,015.61 = 5,430.75/x
  3. Step 3: Cross multiply
    12,003.99x = 18,015.61 × 5,430.75
  4. Step 4: Simplify right side
    12,003.99x = 97,838,274.01
  5. Step 5: Solve for x
    x = 97,838,274.01/12,003.99
  6. Step 6: Final answer
    x = 8,150.48

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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.