Home / 14,778.78-20,385.99-9,471.66

Finding the Fourth Proportional to 14,778.78, 20,385.99 and 9,471.66

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Solution

The fourth proportional to 14,778.78, 20,385.99 and 9,471.66 is: 13,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.78 : 20,385.99 = 9,471.66 : x
  2. Step 2: Convert to fraction form
    14,778.78/20,385.99 = 9,471.66/x
  3. Step 3: Cross multiply
    14,778.78x = 20,385.99 × 9,471.66
  4. Step 4: Simplify right side
    14,778.78x = 193,089,166.04
  5. Step 5: Solve for x
    x = 193,089,166.04/14,778.78
  6. Step 6: Final answer
    x = 13,065.30

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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.