Home / 28,556.48-42,829.56-7,775.12

Finding the Fourth Proportional to 28,556.48, 42,829.56 and 7,775.12

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Solution

The fourth proportional to 28,556.48, 42,829.56 and 7,775.12 is: 11,661.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.48 : 42,829.56 = 7,775.12 : x
  2. Step 2: Convert to fraction form
    28,556.48/42,829.56 = 7,775.12/x
  3. Step 3: Cross multiply
    28,556.48x = 42,829.56 × 7,775.12
  4. Step 4: Simplify right side
    28,556.48x = 333,004,968.55
  5. Step 5: Solve for x
    x = 333,004,968.55/28,556.48
  6. Step 6: Final answer
    x = 11,661.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.