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Finding the Fourth Proportional to 19,900.16, 29,849.04 and 7,417.76

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Solution

The fourth proportional to 19,900.16, 29,849.04 and 7,417.76 is: 11,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.16 : 29,849.04 = 7,417.76 : x
  2. Step 2: Convert to fraction form
    19,900.16/29,849.04 = 7,417.76/x
  3. Step 3: Cross multiply
    19,900.16x = 29,849.04 × 7,417.76
  4. Step 4: Simplify right side
    19,900.16x = 221,413,014.95
  5. Step 5: Solve for x
    x = 221,413,014.95/19,900.16
  6. Step 6: Final answer
    x = 11,126.19

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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.