Home / 12,137,938.49-18,209,532.12-6,457,337.21

Finding the Fourth Proportional to 12,137,938.49, 18,209,532.12 and 6,457,337.21

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Solution

The fourth proportional to 12,137,938.49, 18,209,532.12 and 6,457,337.21 is: 9,687,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137,938.49 : 18,209,532.12 = 6,457,337.21 : x
  2. Step 2: Convert to fraction form
    12,137,938.49/18,209,532.12 = 6,457,337.21/x
  3. Step 3: Cross multiply
    12,137,938.49x = 18,209,532.12 × 6,457,337.21
  4. Step 4: Simplify right side
    12,137,938.49x = 117,585,089,244,118.53
  5. Step 5: Solve for x
    x = 117,585,089,244,118.53/12,137,938.49
  6. Step 6: Final answer
    x = 9,687,401.97

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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.