Home / 12,238.79-18,360.54-5,218.68

Finding the Fourth Proportional to 12,238.79, 18,360.54 and 5,218.68

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Solution

The fourth proportional to 12,238.79, 18,360.54 and 5,218.68 is: 7,829.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.79 : 18,360.54 = 5,218.68 : x
  2. Step 2: Convert to fraction form
    12,238.79/18,360.54 = 5,218.68/x
  3. Step 3: Cross multiply
    12,238.79x = 18,360.54 × 5,218.68
  4. Step 4: Simplify right side
    12,238.79x = 95,817,782.89
  5. Step 5: Solve for x
    x = 95,817,782.89/12,238.79
  6. Step 6: Final answer
    x = 7,829.03

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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.