Home / 12,126,628.80-18,189,943.20-5,749,336.80

Finding the Fourth Proportional to 12,126,628.80, 18,189,943.20 and 5,749,336.80

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Solution

The fourth proportional to 12,126,628.80, 18,189,943.20 and 5,749,336.80 is: 8,624,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,628.80 : 18,189,943.20 = 5,749,336.80 : x
  2. Step 2: Convert to fraction form
    12,126,628.80/18,189,943.20 = 5,749,336.80/x
  3. Step 3: Cross multiply
    12,126,628.80x = 18,189,943.20 × 5,749,336.80
  4. Step 4: Simplify right side
    12,126,628.80x = 104,580,109,829,669.75
  5. Step 5: Solve for x
    x = 104,580,109,829,669.75/12,126,628.80
  6. Step 6: Final answer
    x = 8,624,005.20

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1.5x scale

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.