Home / 20,279.04-28,004.40-19,174.64

Finding the Fourth Proportional to 20,279.04, 28,004.40 and 19,174.64

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Solution

The fourth proportional to 20,279.04, 28,004.40 and 19,174.64 is: 26,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.04 : 28,004.40 = 19,174.64 : x
  2. Step 2: Convert to fraction form
    20,279.04/28,004.40 = 19,174.64/x
  3. Step 3: Cross multiply
    20,279.04x = 28,004.40 × 19,174.64
  4. Step 4: Simplify right side
    20,279.04x = 536,974,288.42
  5. Step 5: Solve for x
    x = 536,974,288.42/20,279.04
  6. Step 6: Final answer
    x = 26,479.28

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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.