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Finding the Fourth Proportional to 13,602,640.40, 20,356,721.40 and 9,351,112.40

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Solution

The fourth proportional to 13,602,640.40, 20,356,721.40 and 9,351,112.40 is: 13,994,194.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602,640.40 : 20,356,721.40 = 9,351,112.40 : x
  2. Step 2: Convert to fraction form
    13,602,640.40/20,356,721.40 = 9,351,112.40/x
  3. Step 3: Cross multiply
    13,602,640.40x = 20,356,721.40 × 9,351,112.40
  4. Step 4: Simplify right side
    13,602,640.40x = 190,357,989,906,885.34
  5. Step 5: Solve for x
    x = 190,357,989,906,885.34/13,602,640.40
  6. Step 6: Final answer
    x = 13,994,194.09

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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.