Home / 13,868.79-19,147.47-9,028.16

Finding the Fourth Proportional to 13,868.79, 19,147.47 and 9,028.16

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Solution

The fourth proportional to 13,868.79, 19,147.47 and 9,028.16 is: 12,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.79 : 19,147.47 = 9,028.16 : x
  2. Step 2: Convert to fraction form
    13,868.79/19,147.47 = 9,028.16/x
  3. Step 3: Cross multiply
    13,868.79x = 19,147.47 × 9,028.16
  4. Step 4: Simplify right side
    13,868.79x = 172,866,415.75
  5. Step 5: Solve for x
    x = 172,866,415.75/13,868.79
  6. Step 6: Final answer
    x = 12,464.42

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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.