Home / 12,153.96-18,223.64-4,749.59

Finding the Fourth Proportional to 12,153.96, 18,223.64 and 4,749.59

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Solution

The fourth proportional to 12,153.96, 18,223.64 and 4,749.59 is: 7,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.96 : 18,223.64 = 4,749.59 : x
  2. Step 2: Convert to fraction form
    12,153.96/18,223.64 = 4,749.59/x
  3. Step 3: Cross multiply
    12,153.96x = 18,223.64 × 4,749.59
  4. Step 4: Simplify right side
    12,153.96x = 86,554,875.74
  5. Step 5: Solve for x
    x = 86,554,875.74/12,153.96
  6. Step 6: Final answer
    x = 7,121.54

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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.