Home / 14,961.31-20,646.90-8,247.42

Finding the Fourth Proportional to 14,961.31, 20,646.90 and 8,247.42

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Solution

The fourth proportional to 14,961.31, 20,646.90 and 8,247.42 is: 11,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.31 : 20,646.90 = 8,247.42 : x
  2. Step 2: Convert to fraction form
    14,961.31/20,646.90 = 8,247.42/x
  3. Step 3: Cross multiply
    14,961.31x = 20,646.90 × 8,247.42
  4. Step 4: Simplify right side
    14,961.31x = 170,283,656.00
  5. Step 5: Solve for x
    x = 170,283,656.00/14,961.31
  6. Step 6: Final answer
    x = 11,381.60

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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.