Home / 13,177.79-19,765.45-4,412.78

Finding the Fourth Proportional to 13,177.79, 19,765.45 and 4,412.78

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Solution

The fourth proportional to 13,177.79, 19,765.45 and 4,412.78 is: 6,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.79 : 19,765.45 = 4,412.78 : x
  2. Step 2: Convert to fraction form
    13,177.79/19,765.45 = 4,412.78/x
  3. Step 3: Cross multiply
    13,177.79x = 19,765.45 × 4,412.78
  4. Step 4: Simplify right side
    13,177.79x = 87,220,563.26
  5. Step 5: Solve for x
    x = 87,220,563.26/13,177.79
  6. Step 6: Final answer
    x = 6,618.76

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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.