Home / 28,453.78-39,265.53-15,706.91

Finding the Fourth Proportional to 28,453.78, 39,265.53 and 15,706.91

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Solution

The fourth proportional to 28,453.78, 39,265.53 and 15,706.91 is: 21,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.78 : 39,265.53 = 15,706.91 : x
  2. Step 2: Convert to fraction form
    28,453.78/39,265.53 = 15,706.91/x
  3. Step 3: Cross multiply
    28,453.78x = 39,265.53 × 15,706.91
  4. Step 4: Simplify right side
    28,453.78x = 616,740,185.08
  5. Step 5: Solve for x
    x = 616,740,185.08/28,453.78
  6. Step 6: Final answer
    x = 21,675.16

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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.