Home / 12,457,666.20-18,689,123.70-3,938,863.80

Finding the Fourth Proportional to 12,457,666.20, 18,689,123.70 and 3,938,863.80

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Solution

The fourth proportional to 12,457,666.20, 18,689,123.70 and 3,938,863.80 is: 5,909,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,666.20 : 18,689,123.70 = 3,938,863.80 : x
  2. Step 2: Convert to fraction form
    12,457,666.20/18,689,123.70 = 3,938,863.80/x
  3. Step 3: Cross multiply
    12,457,666.20x = 18,689,123.70 × 3,938,863.80
  4. Step 4: Simplify right side
    12,457,666.20x = 73,613,912,795,652.05
  5. Step 5: Solve for x
    x = 73,613,912,795,652.05/12,457,666.20
  6. Step 6: Final answer
    x = 5,909,125.48

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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.