Home / 13,829.45-19,085.78-7,862.99

Finding the Fourth Proportional to 13,829.45, 19,085.78 and 7,862.99

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Solution

The fourth proportional to 13,829.45, 19,085.78 and 7,862.99 is: 10,851.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.45 : 19,085.78 = 7,862.99 : x
  2. Step 2: Convert to fraction form
    13,829.45/19,085.78 = 7,862.99/x
  3. Step 3: Cross multiply
    13,829.45x = 19,085.78 × 7,862.99
  4. Step 4: Simplify right side
    13,829.45x = 150,071,297.28
  5. Step 5: Solve for x
    x = 150,071,297.28/13,829.45
  6. Step 6: Final answer
    x = 10,851.57

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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.