Home / 42,620.30-63,930.36-11,455.55

Finding the Fourth Proportional to 42,620.30, 63,930.36 and 11,455.55

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Solution

The fourth proportional to 42,620.30, 63,930.36 and 11,455.55 is: 17,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620.30 : 63,930.36 = 11,455.55 : x
  2. Step 2: Convert to fraction form
    42,620.30/63,930.36 = 11,455.55/x
  3. Step 3: Cross multiply
    42,620.30x = 63,930.36 × 11,455.55
  4. Step 4: Simplify right side
    42,620.30x = 732,357,435.50
  5. Step 5: Solve for x
    x = 732,357,435.50/42,620.30
  6. Step 6: Final answer
    x = 17,183.30

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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.