Home / 45,021.54-67,494.42-21,315.36

Finding the Fourth Proportional to 45,021.54, 67,494.42 and 21,315.36

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Solution

The fourth proportional to 45,021.54, 67,494.42 and 21,315.36 is: 31,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,021.54 : 67,494.42 = 21,315.36 : x
  2. Step 2: Convert to fraction form
    45,021.54/67,494.42 = 21,315.36/x
  3. Step 3: Cross multiply
    45,021.54x = 67,494.42 × 21,315.36
  4. Step 4: Simplify right side
    45,021.54x = 1,438,667,860.29
  5. Step 5: Solve for x
    x = 1,438,667,860.29/45,021.54
  6. Step 6: Final answer
    x = 31,955.10

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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.