Home / 13,255.49-19,882.21-7,705.29

Finding the Fourth Proportional to 13,255.49, 19,882.21 and 7,705.29

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Solution

The fourth proportional to 13,255.49, 19,882.21 and 7,705.29 is: 11,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.49 : 19,882.21 = 7,705.29 : x
  2. Step 2: Convert to fraction form
    13,255.49/19,882.21 = 7,705.29/x
  3. Step 3: Cross multiply
    13,255.49x = 19,882.21 × 7,705.29
  4. Step 4: Simplify right side
    13,255.49x = 153,198,263.63
  5. Step 5: Solve for x
    x = 153,198,263.63/13,255.49
  6. Step 6: Final answer
    x = 11,557.34

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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.