Home / 42,780.52-64,171.08-13,197.70

Finding the Fourth Proportional to 42,780.52, 64,171.08 and 13,197.70

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Solution

The fourth proportional to 42,780.52, 64,171.08 and 13,197.70 is: 19,796.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,780.52 : 64,171.08 = 13,197.70 : x
  2. Step 2: Convert to fraction form
    42,780.52/64,171.08 = 13,197.70/x
  3. Step 3: Cross multiply
    42,780.52x = 64,171.08 × 13,197.70
  4. Step 4: Simplify right side
    42,780.52x = 846,910,662.52
  5. Step 5: Solve for x
    x = 846,910,662.52/42,780.52
  6. Step 6: Final answer
    x = 19,796.64

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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.