Home / 30,815.60-46,208.76-15,215

Finding the Fourth Proportional to 30,815.60, 46,208.76 and 15,215

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Solution

The fourth proportional to 30,815.60, 46,208.76 and 15,215 is: 22,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.60 : 46,208.76 = 15,215 : x
  2. Step 2: Convert to fraction form
    30,815.60/46,208.76 = 15,215/x
  3. Step 3: Cross multiply
    30,815.60x = 46,208.76 × 15,215
  4. Step 4: Simplify right side
    30,815.60x = 703,066,283.40
  5. Step 5: Solve for x
    x = 703,066,283.40/30,815.60
  6. Step 6: Final answer
    x = 22,815.27

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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.