Home / 13,184.28-19,790.10-7,648.47

Finding the Fourth Proportional to 13,184.28, 19,790.10 and 7,648.47

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Solution

The fourth proportional to 13,184.28, 19,790.10 and 7,648.47 is: 11,480.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.28 : 19,790.10 = 7,648.47 : x
  2. Step 2: Convert to fraction form
    13,184.28/19,790.10 = 7,648.47/x
  3. Step 3: Cross multiply
    13,184.28x = 19,790.10 × 7,648.47
  4. Step 4: Simplify right side
    13,184.28x = 151,363,986.15
  5. Step 5: Solve for x
    x = 151,363,986.15/13,184.28
  6. Step 6: Final answer
    x = 11,480.64

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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.