Home / 18,969.02-28,428.92-12,719.67

Finding the Fourth Proportional to 18,969.02, 28,428.92 and 12,719.67

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Solution

The fourth proportional to 18,969.02, 28,428.92 and 12,719.67 is: 19,063.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.02 : 28,428.92 = 12,719.67 : x
  2. Step 2: Convert to fraction form
    18,969.02/28,428.92 = 12,719.67/x
  3. Step 3: Cross multiply
    18,969.02x = 28,428.92 × 12,719.67
  4. Step 4: Simplify right side
    18,969.02x = 361,606,429.90
  5. Step 5: Solve for x
    x = 361,606,429.90/18,969.02
  6. Step 6: Final answer
    x = 19,063.00

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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.