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Finding the Fourth Proportional to 19,164.80, 28,747.16 and 7,486.24

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Solution

The fourth proportional to 19,164.80, 28,747.16 and 7,486.24 is: 11,229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,164.80 : 28,747.16 = 7,486.24 : x
  2. Step 2: Convert to fraction form
    19,164.80/28,747.16 = 7,486.24/x
  3. Step 3: Cross multiply
    19,164.80x = 28,747.16 × 7,486.24
  4. Step 4: Simplify right side
    19,164.80x = 215,208,139.08
  5. Step 5: Solve for x
    x = 215,208,139.08/19,164.80
  6. Step 6: Final answer
    x = 11,229.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.