Home / 13,128.23-19,693.57-5,228.84

Finding the Fourth Proportional to 13,128.23, 19,693.57 and 5,228.84

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Solution

The fourth proportional to 13,128.23, 19,693.57 and 5,228.84 is: 7,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.23 : 19,693.57 = 5,228.84 : x
  2. Step 2: Convert to fraction form
    13,128.23/19,693.57 = 5,228.84/x
  3. Step 3: Cross multiply
    13,128.23x = 19,693.57 × 5,228.84
  4. Step 4: Simplify right side
    13,128.23x = 102,974,401.95
  5. Step 5: Solve for x
    x = 102,974,401.95/13,128.23
  6. Step 6: Final answer
    x = 7,843.74

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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.