Home / 14,725.40-20,321.58-8,438.98

Finding the Fourth Proportional to 14,725.40, 20,321.58 and 8,438.98

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Solution

The fourth proportional to 14,725.40, 20,321.58 and 8,438.98 is: 11,646.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,725.40 : 20,321.58 = 8,438.98 : x
  2. Step 2: Convert to fraction form
    14,725.40/20,321.58 = 8,438.98/x
  3. Step 3: Cross multiply
    14,725.40x = 20,321.58 × 8,438.98
  4. Step 4: Simplify right side
    14,725.40x = 171,493,407.19
  5. Step 5: Solve for x
    x = 171,493,407.19/14,725.40
  6. Step 6: Final answer
    x = 11,646.09

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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.