Home / 20,139.57-27,782.96-14,174.55

Finding the Fourth Proportional to 20,139.57, 27,782.96 and 14,174.55

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Solution

The fourth proportional to 20,139.57, 27,782.96 and 14,174.55 is: 19,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.57 : 27,782.96 = 14,174.55 : x
  2. Step 2: Convert to fraction form
    20,139.57/27,782.96 = 14,174.55/x
  3. Step 3: Cross multiply
    20,139.57x = 27,782.96 × 14,174.55
  4. Step 4: Simplify right side
    20,139.57x = 393,810,955.67
  5. Step 5: Solve for x
    x = 393,810,955.67/20,139.57
  6. Step 6: Final answer
    x = 19,554.09

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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.