Home / 13,143,627.40-19,715,441.10-12,639,742.60

Finding the Fourth Proportional to 13,143,627.40, 19,715,441.10 and 12,639,742.60

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Solution

The fourth proportional to 13,143,627.40, 19,715,441.10 and 12,639,742.60 is: 18,959,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,627.40 : 19,715,441.10 = 12,639,742.60 : x
  2. Step 2: Convert to fraction form
    13,143,627.40/19,715,441.10 = 12,639,742.60/x
  3. Step 3: Cross multiply
    13,143,627.40x = 19,715,441.10 × 12,639,742.60
  4. Step 4: Simplify right side
    13,143,627.40x = 249,198,100,749,460.88
  5. Step 5: Solve for x
    x = 249,198,100,749,460.88/13,143,627.40
  6. Step 6: Final answer
    x = 18,959,613.90

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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.