Home / 28,243.52-42,365.30-12,650.21

Finding the Fourth Proportional to 28,243.52, 42,365.30 and 12,650.21

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Solution

The fourth proportional to 28,243.52, 42,365.30 and 12,650.21 is: 18,975.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.52 : 42,365.30 = 12,650.21 : x
  2. Step 2: Convert to fraction form
    28,243.52/42,365.30 = 12,650.21/x
  3. Step 3: Cross multiply
    28,243.52x = 42,365.30 × 12,650.21
  4. Step 4: Simplify right side
    28,243.52x = 535,929,825.51
  5. Step 5: Solve for x
    x = 535,929,825.51/28,243.52
  6. Step 6: Final answer
    x = 18,975.32

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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.