Home / 28,243.89-38,975.83-15,497.02

Finding the Fourth Proportional to 28,243.89, 38,975.83 and 15,497.02

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Solution

The fourth proportional to 28,243.89, 38,975.83 and 15,497.02 is: 21,385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.89 : 38,975.83 = 15,497.02 : x
  2. Step 2: Convert to fraction form
    28,243.89/38,975.83 = 15,497.02/x
  3. Step 3: Cross multiply
    28,243.89x = 38,975.83 × 15,497.02
  4. Step 4: Simplify right side
    28,243.89x = 604,009,314.17
  5. Step 5: Solve for x
    x = 604,009,314.17/28,243.89
  6. Step 6: Final answer
    x = 21,385.49

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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.