Home / 22,379.36-30,883.64-12,308.45

Finding the Fourth Proportional to 22,379.36, 30,883.64 and 12,308.45

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Solution

The fourth proportional to 22,379.36, 30,883.64 and 12,308.45 is: 16,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,379.36 : 30,883.64 = 12,308.45 : x
  2. Step 2: Convert to fraction form
    22,379.36/30,883.64 = 12,308.45/x
  3. Step 3: Cross multiply
    22,379.36x = 30,883.64 × 12,308.45
  4. Step 4: Simplify right side
    22,379.36x = 380,129,522.80
  5. Step 5: Solve for x
    x = 380,129,522.80/22,379.36
  6. Step 6: Final answer
    x = 16,985.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.