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Finding the Fourth Proportional to 13,656,868.40, 20,485,302.60 and 9,352,196.30

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Solution

The fourth proportional to 13,656,868.40, 20,485,302.60 and 9,352,196.30 is: 14,028,294.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656,868.40 : 20,485,302.60 = 9,352,196.30 : x
  2. Step 2: Convert to fraction form
    13,656,868.40/20,485,302.60 = 9,352,196.30/x
  3. Step 3: Cross multiply
    13,656,868.40x = 20,485,302.60 × 9,352,196.30
  4. Step 4: Simplify right side
    13,656,868.40x = 191,582,571,180,100.41
  5. Step 5: Solve for x
    x = 191,582,571,180,100.41/13,656,868.40
  6. Step 6: Final answer
    x = 14,028,294.45

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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.