Home / 12,871,509.45-17,762,813.80-6,991,200.71

Finding the Fourth Proportional to 12,871,509.45, 17,762,813.80 and 6,991,200.71

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Solution

The fourth proportional to 12,871,509.45, 17,762,813.80 and 6,991,200.71 is: 9,647,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871,509.45 : 17,762,813.80 = 6,991,200.71 : x
  2. Step 2: Convert to fraction form
    12,871,509.45/17,762,813.80 = 6,991,200.71/x
  3. Step 3: Cross multiply
    12,871,509.45x = 17,762,813.80 × 6,991,200.71
  4. Step 4: Simplify right side
    12,871,509.45x = 124,183,396,410,476.28
  5. Step 5: Solve for x
    x = 124,183,396,410,476.28/12,871,509.45
  6. Step 6: Final answer
    x = 9,647,928.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.