Home / 45,021.05-67,538.87-13,856.30

Finding the Fourth Proportional to 45,021.05, 67,538.87 and 13,856.30

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Solution

The fourth proportional to 45,021.05, 67,538.87 and 13,856.30 is: 20,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,021.05 : 67,538.87 = 13,856.30 : x
  2. Step 2: Convert to fraction form
    45,021.05/67,538.87 = 13,856.30/x
  3. Step 3: Cross multiply
    45,021.05x = 67,538.87 × 13,856.30
  4. Step 4: Simplify right side
    45,021.05x = 935,838,437.41
  5. Step 5: Solve for x
    x = 935,838,437.41/45,021.05
  6. Step 6: Final answer
    x = 20,786.69

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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.