Home / 13,778.18-19,017.35-7,813.41

Finding the Fourth Proportional to 13,778.18, 19,017.35 and 7,813.41

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Solution

The fourth proportional to 13,778.18, 19,017.35 and 7,813.41 is: 10,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.18 : 19,017.35 = 7,813.41 : x
  2. Step 2: Convert to fraction form
    13,778.18/19,017.35 = 7,813.41/x
  3. Step 3: Cross multiply
    13,778.18x = 19,017.35 × 7,813.41
  4. Step 4: Simplify right side
    13,778.18x = 148,590,313.60
  5. Step 5: Solve for x
    x = 148,590,313.60/13,778.18
  6. Step 6: Final answer
    x = 10,784.47

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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.