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Finding the Fourth Proportional to 19,313.79, 28,954.01 and 7,475.85

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Solution

The fourth proportional to 19,313.79, 28,954.01 and 7,475.85 is: 11,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.79 : 28,954.01 = 7,475.85 : x
  2. Step 2: Convert to fraction form
    19,313.79/28,954.01 = 7,475.85/x
  3. Step 3: Cross multiply
    19,313.79x = 28,954.01 × 7,475.85
  4. Step 4: Simplify right side
    19,313.79x = 216,455,798.28
  5. Step 5: Solve for x
    x = 216,455,798.28/19,313.79
  6. Step 6: Final answer
    x = 11,207.32

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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.