Home / 19,643.89-27,077.09-13,268.48

Finding the Fourth Proportional to 19,643.89, 27,077.09 and 13,268.48

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Solution

The fourth proportional to 19,643.89, 27,077.09 and 13,268.48 is: 18,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.89 : 27,077.09 = 13,268.48 : x
  2. Step 2: Convert to fraction form
    19,643.89/27,077.09 = 13,268.48/x
  3. Step 3: Cross multiply
    19,643.89x = 27,077.09 × 13,268.48
  4. Step 4: Simplify right side
    19,643.89x = 359,271,827.12
  5. Step 5: Solve for x
    x = 359,271,827.12/19,643.89
  6. Step 6: Final answer
    x = 18,289.24

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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.