Home / 14,725.48-20,321.69-8,439.07

Finding the Fourth Proportional to 14,725.48, 20,321.69 and 8,439.07

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Solution

The fourth proportional to 14,725.48, 20,321.69 and 8,439.07 is: 11,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,725.48 : 20,321.69 = 8,439.07 : x
  2. Step 2: Convert to fraction form
    14,725.48/20,321.69 = 8,439.07/x
  3. Step 3: Cross multiply
    14,725.48x = 20,321.69 × 8,439.07
  4. Step 4: Simplify right side
    14,725.48x = 171,496,164.43
  5. Step 5: Solve for x
    x = 171,496,164.43/14,725.48
  6. Step 6: Final answer
    x = 11,646.22

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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.