Home / 20,271.88-27,971.85-11,317.94

Finding the Fourth Proportional to 20,271.88, 27,971.85 and 11,317.94

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Solution

The fourth proportional to 20,271.88, 27,971.85 and 11,317.94 is: 15,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.88 : 27,971.85 = 11,317.94 : x
  2. Step 2: Convert to fraction form
    20,271.88/27,971.85 = 11,317.94/x
  3. Step 3: Cross multiply
    20,271.88x = 27,971.85 × 11,317.94
  4. Step 4: Simplify right side
    20,271.88x = 316,583,719.99
  5. Step 5: Solve for x
    x = 316,583,719.99/20,271.88
  6. Step 6: Final answer
    x = 15,616.89

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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.