Home / 13,078.30-18,050.65-7,772.09

Finding the Fourth Proportional to 13,078.30, 18,050.65 and 7,772.09

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Solution

The fourth proportional to 13,078.30, 18,050.65 and 7,772.09 is: 10,727.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.30 : 18,050.65 = 7,772.09 : x
  2. Step 2: Convert to fraction form
    13,078.30/18,050.65 = 7,772.09/x
  3. Step 3: Cross multiply
    13,078.30x = 18,050.65 × 7,772.09
  4. Step 4: Simplify right side
    13,078.30x = 140,291,276.36
  5. Step 5: Solve for x
    x = 140,291,276.36/13,078.30
  6. Step 6: Final answer
    x = 10,727.03

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1.5x scale

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.