Home / 12,283.54-18,428.19-3,518.23

Finding the Fourth Proportional to 12,283.54, 18,428.19 and 3,518.23

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Solution

The fourth proportional to 12,283.54, 18,428.19 and 3,518.23 is: 5,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.54 : 18,428.19 = 3,518.23 : x
  2. Step 2: Convert to fraction form
    12,283.54/18,428.19 = 3,518.23/x
  3. Step 3: Cross multiply
    12,283.54x = 18,428.19 × 3,518.23
  4. Step 4: Simplify right side
    12,283.54x = 64,834,518.76
  5. Step 5: Solve for x
    x = 64,834,518.76/12,283.54
  6. Step 6: Final answer
    x = 5,278.16

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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.