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Finding the Fourth Proportional to 19,710.56, 29,570.16 and 7,398.56

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Solution

The fourth proportional to 19,710.56, 29,570.16 and 7,398.56 is: 11,099.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.56 : 29,570.16 = 7,398.56 : x
  2. Step 2: Convert to fraction form
    19,710.56/29,570.16 = 7,398.56/x
  3. Step 3: Cross multiply
    19,710.56x = 29,570.16 × 7,398.56
  4. Step 4: Simplify right side
    19,710.56x = 218,776,704.64
  5. Step 5: Solve for x
    x = 218,776,704.64/19,710.56
  6. Step 6: Final answer
    x = 11,099.47

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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.