Home / 43,270.78-64,915.55-13,285.12

Finding the Fourth Proportional to 43,270.78, 64,915.55 and 13,285.12

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Solution

The fourth proportional to 43,270.78, 64,915.55 and 13,285.12 is: 19,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,270.78 : 64,915.55 = 13,285.12 : x
  2. Step 2: Convert to fraction form
    43,270.78/64,915.55 = 13,285.12/x
  3. Step 3: Cross multiply
    43,270.78x = 64,915.55 × 13,285.12
  4. Step 4: Simplify right side
    43,270.78x = 862,410,889.17
  5. Step 5: Solve for x
    x = 862,410,889.17/43,270.78
  6. Step 6: Final answer
    x = 19,930.56

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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.