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Finding the Fourth Proportional to 13,603,868.68, 18,774,187.68 and 7,492,295.56

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Solution

The fourth proportional to 13,603,868.68, 18,774,187.68 and 7,492,295.56 is: 10,339,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603,868.68 : 18,774,187.68 = 7,492,295.56 : x
  2. Step 2: Convert to fraction form
    13,603,868.68/18,774,187.68 = 7,492,295.56/x
  3. Step 3: Cross multiply
    13,603,868.68x = 18,774,187.68 × 7,492,295.56
  4. Step 4: Simplify right side
    13,603,868.68x = 140,661,762,997,470.69
  5. Step 5: Solve for x
    x = 140,661,762,997,470.69/13,603,868.68
  6. Step 6: Final answer
    x = 10,339,835.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.