Home / 12,161.48-18,228.90-4,764.68

Finding the Fourth Proportional to 12,161.48, 18,228.90 and 4,764.68

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Solution

The fourth proportional to 12,161.48, 18,228.90 and 4,764.68 is: 7,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.48 : 18,228.90 = 4,764.68 : x
  2. Step 2: Convert to fraction form
    12,161.48/18,228.90 = 4,764.68/x
  3. Step 3: Cross multiply
    12,161.48x = 18,228.90 × 4,764.68
  4. Step 4: Simplify right side
    12,161.48x = 86,854,875.25
  5. Step 5: Solve for x
    x = 86,854,875.25/12,161.48
  6. Step 6: Final answer
    x = 7,141.80

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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.