Home / 14,580.32-20,120.60-8,119.89

Finding the Fourth Proportional to 14,580.32, 20,120.60 and 8,119.89

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Solution

The fourth proportional to 14,580.32, 20,120.60 and 8,119.89 is: 11,205.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,580.32 : 20,120.60 = 8,119.89 : x
  2. Step 2: Convert to fraction form
    14,580.32/20,120.60 = 8,119.89/x
  3. Step 3: Cross multiply
    14,580.32x = 20,120.60 × 8,119.89
  4. Step 4: Simplify right side
    14,580.32x = 163,377,018.13
  5. Step 5: Solve for x
    x = 163,377,018.13/14,580.32
  6. Step 6: Final answer
    x = 11,205.31

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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.