Home / 21,898.16-30,149.88-19,102.64

Finding the Fourth Proportional to 21,898.16, 30,149.88 and 19,102.64

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Solution

The fourth proportional to 21,898.16, 30,149.88 and 19,102.64 is: 26,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.16 : 30,149.88 = 19,102.64 : x
  2. Step 2: Convert to fraction form
    21,898.16/30,149.88 = 19,102.64/x
  3. Step 3: Cross multiply
    21,898.16x = 30,149.88 × 19,102.64
  4. Step 4: Simplify right side
    21,898.16x = 575,942,303.68
  5. Step 5: Solve for x
    x = 575,942,303.68/21,898.16
  6. Step 6: Final answer
    x = 26,300.95

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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.