Home / 28,453.22-39,265.59-15,878.06

Finding the Fourth Proportional to 28,453.22, 39,265.59 and 15,878.06

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Solution

The fourth proportional to 28,453.22, 39,265.59 and 15,878.06 is: 21,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.22 : 39,265.59 = 15,878.06 : x
  2. Step 2: Convert to fraction form
    28,453.22/39,265.59 = 15,878.06/x
  3. Step 3: Cross multiply
    28,453.22x = 39,265.59 × 15,878.06
  4. Step 4: Simplify right side
    28,453.22x = 623,461,393.96
  5. Step 5: Solve for x
    x = 623,461,393.96/28,453.22
  6. Step 6: Final answer
    x = 21,911.80

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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.