Home / 13,629.79-20,345.25-11,969.04

Finding the Fourth Proportional to 13,629.79, 20,345.25 and 11,969.04

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Solution

The fourth proportional to 13,629.79, 20,345.25 and 11,969.04 is: 17,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.79 : 20,345.25 = 11,969.04 : x
  2. Step 2: Convert to fraction form
    13,629.79/20,345.25 = 11,969.04/x
  3. Step 3: Cross multiply
    13,629.79x = 20,345.25 × 11,969.04
  4. Step 4: Simplify right side
    13,629.79x = 243,513,141.35
  5. Step 5: Solve for x
    x = 243,513,141.35/13,629.79
  6. Step 6: Final answer
    x = 17,866.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.