Home / 21,007.74-28,968.39-18,892.02

Finding the Fourth Proportional to 21,007.74, 28,968.39 and 18,892.02

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Solution

The fourth proportional to 21,007.74, 28,968.39 and 18,892.02 is: 26,050.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.74 : 28,968.39 = 18,892.02 : x
  2. Step 2: Convert to fraction form
    21,007.74/28,968.39 = 18,892.02/x
  3. Step 3: Cross multiply
    21,007.74x = 28,968.39 × 18,892.02
  4. Step 4: Simplify right side
    21,007.74x = 547,271,403.25
  5. Step 5: Solve for x
    x = 547,271,403.25/21,007.74
  6. Step 6: Final answer
    x = 26,050.94

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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.