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Finding the Fourth Proportional to 13,673,813.88, 18,869,099.94 and 7,477,637.88

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Solution

The fourth proportional to 13,673,813.88, 18,869,099.94 and 7,477,637.88 is: 10,318,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673,813.88 : 18,869,099.94 = 7,477,637.88 : x
  2. Step 2: Convert to fraction form
    13,673,813.88/18,869,099.94 = 7,477,637.88/x
  3. Step 3: Cross multiply
    13,673,813.88x = 18,869,099.94 × 7,477,637.88
  4. Step 4: Simplify right side
    13,673,813.88x = 141,096,296,472,849.75
  5. Step 5: Solve for x
    x = 141,096,296,472,849.75/13,673,813.88
  6. Step 6: Final answer
    x = 10,318,722.90

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1.5x scale

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.