Home / 20,427.59-30,633.48-7,945.91

Finding the Fourth Proportional to 20,427.59, 30,633.48 and 7,945.91

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Solution

The fourth proportional to 20,427.59, 30,633.48 and 7,945.91 is: 11,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.59 : 30,633.48 = 7,945.91 : x
  2. Step 2: Convert to fraction form
    20,427.59/30,633.48 = 7,945.91/x
  3. Step 3: Cross multiply
    20,427.59x = 30,633.48 × 7,945.91
  4. Step 4: Simplify right side
    20,427.59x = 243,410,875.07
  5. Step 5: Solve for x
    x = 243,410,875.07/20,427.59
  6. Step 6: Final answer
    x = 11,915.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.