Home / 13,860.24-19,126.36-7,891.08

Finding the Fourth Proportional to 13,860.24, 19,126.36 and 7,891.08

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Solution

The fourth proportional to 13,860.24, 19,126.36 and 7,891.08 is: 10,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.24 : 19,126.36 = 7,891.08 : x
  2. Step 2: Convert to fraction form
    13,860.24/19,126.36 = 7,891.08/x
  3. Step 3: Cross multiply
    13,860.24x = 19,126.36 × 7,891.08
  4. Step 4: Simplify right side
    13,860.24x = 150,927,636.87
  5. Step 5: Solve for x
    x = 150,927,636.87/13,860.24
  6. Step 6: Final answer
    x = 10,889.25

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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.