Home / 12,212.81-18,306.90-4,814.40

Finding the Fourth Proportional to 12,212.81, 18,306.90 and 4,814.40

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Solution

The fourth proportional to 12,212.81, 18,306.90 and 4,814.40 is: 7,216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.81 : 18,306.90 = 4,814.40 : x
  2. Step 2: Convert to fraction form
    12,212.81/18,306.90 = 4,814.40/x
  3. Step 3: Cross multiply
    12,212.81x = 18,306.90 × 4,814.40
  4. Step 4: Simplify right side
    12,212.81x = 88,136,739.36
  5. Step 5: Solve for x
    x = 88,136,739.36/12,212.81
  6. Step 6: Final answer
    x = 7,216.75

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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.