Home / 28,929.75-43,378.02-11,390.01

Finding the Fourth Proportional to 28,929.75, 43,378.02 and 11,390.01

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Solution

The fourth proportional to 28,929.75, 43,378.02 and 11,390.01 is: 17,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.75 : 43,378.02 = 11,390.01 : x
  2. Step 2: Convert to fraction form
    28,929.75/43,378.02 = 11,390.01/x
  3. Step 3: Cross multiply
    28,929.75x = 43,378.02 × 11,390.01
  4. Step 4: Simplify right side
    28,929.75x = 494,076,081.58
  5. Step 5: Solve for x
    x = 494,076,081.58/28,929.75
  6. Step 6: Final answer
    x = 17,078.48

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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.