Home / 28,629.86-42,915.47-11,999.52

Finding the Fourth Proportional to 28,629.86, 42,915.47 and 11,999.52

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Solution

The fourth proportional to 28,629.86, 42,915.47 and 11,999.52 is: 17,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.86 : 42,915.47 = 11,999.52 : x
  2. Step 2: Convert to fraction form
    28,629.86/42,915.47 = 11,999.52/x
  3. Step 3: Cross multiply
    28,629.86x = 42,915.47 × 11,999.52
  4. Step 4: Simplify right side
    28,629.86x = 514,964,980.58
  5. Step 5: Solve for x
    x = 514,964,980.58/28,629.86
  6. Step 6: Final answer
    x = 17,986.99

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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.