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Finding the Fourth Proportional to 19,610, 29,419.88 and 5,759

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Solution

The fourth proportional to 19,610, 29,419.88 and 5,759 is: 8,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,610 : 29,419.88 = 5,759 : x
  2. Step 2: Convert to fraction form
    19,610/29,419.88 = 5,759/x
  3. Step 3: Cross multiply
    19,610x = 29,419.88 × 5,759
  4. Step 4: Simplify right side
    19,610x = 169,429,088.92
  5. Step 5: Solve for x
    x = 169,429,088.92/19,610
  6. Step 6: Final answer
    x = 8,639.93

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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.