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Finding the Fourth Proportional to 19,902.52, 29,851.00 and 7,420.93

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Solution

The fourth proportional to 19,902.52, 29,851.00 and 7,420.93 is: 11,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.52 : 29,851.00 = 7,420.93 : x
  2. Step 2: Convert to fraction form
    19,902.52/29,851.00 = 7,420.93/x
  3. Step 3: Cross multiply
    19,902.52x = 29,851.00 × 7,420.93
  4. Step 4: Simplify right side
    19,902.52x = 221,522,088.25
  5. Step 5: Solve for x
    x = 221,522,088.25/19,902.52
  6. Step 6: Final answer
    x = 11,130.35

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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.