Home / 13,821.20-19,072.20-7,852.96

Finding the Fourth Proportional to 13,821.20, 19,072.20 and 7,852.96

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Solution

The fourth proportional to 13,821.20, 19,072.20 and 7,852.96 is: 10,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.20 : 19,072.20 = 7,852.96 : x
  2. Step 2: Convert to fraction form
    13,821.20/19,072.20 = 7,852.96/x
  3. Step 3: Cross multiply
    13,821.20x = 19,072.20 × 7,852.96
  4. Step 4: Simplify right side
    13,821.20x = 149,773,223.71
  5. Step 5: Solve for x
    x = 149,773,223.71/13,821.20
  6. Step 6: Final answer
    x = 10,836.48

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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.