Home / 12,457,412.20-18,688,742.70-3,938,609.80

Finding the Fourth Proportional to 12,457,412.20, 18,688,742.70 and 3,938,609.80

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Solution

The fourth proportional to 12,457,412.20, 18,688,742.70 and 3,938,609.80 is: 5,908,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,412.20 : 18,688,742.70 = 3,938,609.80 : x
  2. Step 2: Convert to fraction form
    12,457,412.20/18,688,742.70 = 3,938,609.80/x
  3. Step 3: Cross multiply
    12,457,412.20x = 18,688,742.70 × 3,938,609.80
  4. Step 4: Simplify right side
    12,457,412.20x = 73,607,665,147,898.45
  5. Step 5: Solve for x
    x = 73,607,665,147,898.45/12,457,412.20
  6. Step 6: Final answer
    x = 5,908,744.45

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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.