Home / 30,028.78-45,007.99-12,248.34

Finding the Fourth Proportional to 30,028.78, 45,007.99 and 12,248.34

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Solution

The fourth proportional to 30,028.78, 45,007.99 and 12,248.34 is: 18,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.78 : 45,007.99 = 12,248.34 : x
  2. Step 2: Convert to fraction form
    30,028.78/45,007.99 = 12,248.34/x
  3. Step 3: Cross multiply
    30,028.78x = 45,007.99 × 12,248.34
  4. Step 4: Simplify right side
    30,028.78x = 551,273,102.99
  5. Step 5: Solve for x
    x = 551,273,102.99/30,028.78
  6. Step 6: Final answer
    x = 18,358.16

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1.5x scale

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.