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Finding the Fourth Proportional to 19,868.02, 29,802.04 and 7,387.79

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Solution

The fourth proportional to 19,868.02, 29,802.04 and 7,387.79 is: 11,081.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.02 : 29,802.04 = 7,387.79 : x
  2. Step 2: Convert to fraction form
    19,868.02/29,802.04 = 7,387.79/x
  3. Step 3: Cross multiply
    19,868.02x = 29,802.04 × 7,387.79
  4. Step 4: Simplify right side
    19,868.02x = 220,171,045.61
  5. Step 5: Solve for x
    x = 220,171,045.61/19,868.02
  6. Step 6: Final answer
    x = 11,081.68

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1.5x scale

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.