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Finding the Fourth Proportional to 39,881.74, 59,813.54 and 11,803.90

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Solution

The fourth proportional to 39,881.74, 59,813.54 and 11,803.90 is: 17,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.74 : 59,813.54 = 11,803.90 : x
  2. Step 2: Convert to fraction form
    39,881.74/59,813.54 = 11,803.90/x
  3. Step 3: Cross multiply
    39,881.74x = 59,813.54 × 11,803.90
  4. Step 4: Simplify right side
    39,881.74x = 706,033,044.81
  5. Step 5: Solve for x
    x = 706,033,044.81/39,881.74
  6. Step 6: Final answer
    x = 17,703.17

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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.