Home / 13,021.11-19,531.67-3,160.40

Finding the Fourth Proportional to 13,021.11, 19,531.67 and 3,160.40

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Solution

The fourth proportional to 13,021.11, 19,531.67 and 3,160.40 is: 4,740.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.11 : 19,531.67 = 3,160.40 : x
  2. Step 2: Convert to fraction form
    13,021.11/19,531.67 = 3,160.40/x
  3. Step 3: Cross multiply
    13,021.11x = 19,531.67 × 3,160.40
  4. Step 4: Simplify right side
    13,021.11x = 61,727,776.41
  5. Step 5: Solve for x
    x = 61,727,776.41/13,021.11
  6. Step 6: Final answer
    x = 4,740.59

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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.