Home / 20,411.54-28,167.90-11,459.06

Finding the Fourth Proportional to 20,411.54, 28,167.90 and 11,459.06

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Solution

The fourth proportional to 20,411.54, 28,167.90 and 11,459.06 is: 15,813.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.54 : 28,167.90 = 11,459.06 : x
  2. Step 2: Convert to fraction form
    20,411.54/28,167.90 = 11,459.06/x
  3. Step 3: Cross multiply
    20,411.54x = 28,167.90 × 11,459.06
  4. Step 4: Simplify right side
    20,411.54x = 322,777,515.33
  5. Step 5: Solve for x
    x = 322,777,515.33/20,411.54
  6. Step 6: Final answer
    x = 15,813.48

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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.