Home / 28,285.31-39,033.64-15,538.47

Finding the Fourth Proportional to 28,285.31, 39,033.64 and 15,538.47

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Solution

The fourth proportional to 28,285.31, 39,033.64 and 15,538.47 is: 21,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.31 : 39,033.64 = 15,538.47 : x
  2. Step 2: Convert to fraction form
    28,285.31/39,033.64 = 15,538.47/x
  3. Step 3: Cross multiply
    28,285.31x = 39,033.64 × 15,538.47
  4. Step 4: Simplify right side
    28,285.31x = 606,522,917.18
  5. Step 5: Solve for x
    x = 606,522,917.18/28,285.31
  6. Step 6: Final answer
    x = 21,443.03

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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.