Home / 20,167.17-27,830.96-11,215.45

Finding the Fourth Proportional to 20,167.17, 27,830.96 and 11,215.45

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Solution

The fourth proportional to 20,167.17, 27,830.96 and 11,215.45 is: 15,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.17 : 27,830.96 = 11,215.45 : x
  2. Step 2: Convert to fraction form
    20,167.17/27,830.96 = 11,215.45/x
  3. Step 3: Cross multiply
    20,167.17x = 27,830.96 × 11,215.45
  4. Step 4: Simplify right side
    20,167.17x = 312,136,740.33
  5. Step 5: Solve for x
    x = 312,136,740.33/20,167.17
  6. Step 6: Final answer
    x = 15,477.47

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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.