Home / 21,341.03-29,453.41-11,911.55

Finding the Fourth Proportional to 21,341.03, 29,453.41 and 11,911.55

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Solution

The fourth proportional to 21,341.03, 29,453.41 and 11,911.55 is: 16,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.03 : 29,453.41 = 11,911.55 : x
  2. Step 2: Convert to fraction form
    21,341.03/29,453.41 = 11,911.55/x
  3. Step 3: Cross multiply
    21,341.03x = 29,453.41 × 11,911.55
  4. Step 4: Simplify right side
    21,341.03x = 350,835,854.41
  5. Step 5: Solve for x
    x = 350,835,854.41/21,341.03
  6. Step 6: Final answer
    x = 16,439.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.