Home / 13,824.10-19,077.75-7,855.57

Finding the Fourth Proportional to 13,824.10, 19,077.75 and 7,855.57

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Solution

The fourth proportional to 13,824.10, 19,077.75 and 7,855.57 is: 10,840.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.10 : 19,077.75 = 7,855.57 : x
  2. Step 2: Convert to fraction form
    13,824.10/19,077.75 = 7,855.57/x
  3. Step 3: Cross multiply
    13,824.10x = 19,077.75 × 7,855.57
  4. Step 4: Simplify right side
    13,824.10x = 149,866,600.57
  5. Step 5: Solve for x
    x = 149,866,600.57/13,824.10
  6. Step 6: Final answer
    x = 10,840.97

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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.