Home / 28,701.42-39,615.78-18,629.28

Finding the Fourth Proportional to 28,701.42, 39,615.78 and 18,629.28

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Solution

The fourth proportional to 28,701.42, 39,615.78 and 18,629.28 is: 25,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,701.42 : 39,615.78 = 18,629.28 : x
  2. Step 2: Convert to fraction form
    28,701.42/39,615.78 = 18,629.28/x
  3. Step 3: Cross multiply
    28,701.42x = 39,615.78 × 18,629.28
  4. Step 4: Simplify right side
    28,701.42x = 738,013,458.04
  5. Step 5: Solve for x
    x = 738,013,458.04/28,701.42
  6. Step 6: Final answer
    x = 25,713.48

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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.