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Finding the Fourth Proportional to 13,479,619.30, 20,177,438.55 and 9,700,483.30

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Solution

The fourth proportional to 13,479,619.30, 20,177,438.55 and 9,700,483.30 is: 14,520,506.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,619.30 : 20,177,438.55 = 9,700,483.30 : x
  2. Step 2: Convert to fraction form
    13,479,619.30/20,177,438.55 = 9,700,483.30/x
  3. Step 3: Cross multiply
    13,479,619.30x = 20,177,438.55 × 9,700,483.30
  4. Step 4: Simplify right side
    13,479,619.30x = 195,730,905,691,051.25
  5. Step 5: Solve for x
    x = 195,730,905,691,051.25/13,479,619.30
  6. Step 6: Final answer
    x = 14,520,506.95

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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.