Home / 8,215,430.60-12,289,968.30-7,105,824.20

Finding the Fourth Proportional to 8,215,430.60, 12,289,968.30 and 7,105,824.20

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Solution

The fourth proportional to 8,215,430.60, 12,289,968.30 and 7,105,824.20 is: 10,630,039.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215,430.60 : 12,289,968.30 = 7,105,824.20 : x
  2. Step 2: Convert to fraction form
    8,215,430.60/12,289,968.30 = 7,105,824.20/x
  3. Step 3: Cross multiply
    8,215,430.60x = 12,289,968.30 × 7,105,824.20
  4. Step 4: Simplify right side
    8,215,430.60x = 87,330,354,163,372.88
  5. Step 5: Solve for x
    x = 87,330,354,163,372.88/8,215,430.60
  6. Step 6: Final answer
    x = 10,630,039.79

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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.