Home / 14,739.78-20,340.54-8,451.75

Finding the Fourth Proportional to 14,739.78, 20,340.54 and 8,451.75

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Solution

The fourth proportional to 14,739.78, 20,340.54 and 8,451.75 is: 11,663.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,739.78 : 20,340.54 = 8,451.75 : x
  2. Step 2: Convert to fraction form
    14,739.78/20,340.54 = 8,451.75/x
  3. Step 3: Cross multiply
    14,739.78x = 20,340.54 × 8,451.75
  4. Step 4: Simplify right side
    14,739.78x = 171,913,158.95
  5. Step 5: Solve for x
    x = 171,913,158.95/14,739.78
  6. Step 6: Final answer
    x = 11,663.21

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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.