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Finding the Fourth Proportional to 19,603.98, 29,385.93 and 8,501.31

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Solution

The fourth proportional to 19,603.98, 29,385.93 and 8,501.31 is: 12,743.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.98 : 29,385.93 = 8,501.31 : x
  2. Step 2: Convert to fraction form
    19,603.98/29,385.93 = 8,501.31/x
  3. Step 3: Cross multiply
    19,603.98x = 29,385.93 × 8,501.31
  4. Step 4: Simplify right side
    19,603.98x = 249,818,900.57
  5. Step 5: Solve for x
    x = 249,818,900.57/19,603.98
  6. Step 6: Final answer
    x = 12,743.27

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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.