Home / 20,494.51-28,277.40-13,675.12

Finding the Fourth Proportional to 20,494.51, 28,277.40 and 13,675.12

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Solution

The fourth proportional to 20,494.51, 28,277.40 and 13,675.12 is: 18,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.51 : 28,277.40 = 13,675.12 : x
  2. Step 2: Convert to fraction form
    20,494.51/28,277.40 = 13,675.12/x
  3. Step 3: Cross multiply
    20,494.51x = 28,277.40 × 13,675.12
  4. Step 4: Simplify right side
    20,494.51x = 386,696,696.90
  5. Step 5: Solve for x
    x = 386,696,696.90/20,494.51
  6. Step 6: Final answer
    x = 18,868.31

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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.