Home / 13,551.14-20,428.26-12,647.99

Finding the Fourth Proportional to 13,551.14, 20,428.26 and 12,647.99

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Solution

The fourth proportional to 13,551.14, 20,428.26 and 12,647.99 is: 19,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.14 : 20,428.26 = 12,647.99 : x
  2. Step 2: Convert to fraction form
    13,551.14/20,428.26 = 12,647.99/x
  3. Step 3: Cross multiply
    13,551.14x = 20,428.26 × 12,647.99
  4. Step 4: Simplify right side
    13,551.14x = 258,376,326.06
  5. Step 5: Solve for x
    x = 258,376,326.06/13,551.14
  6. Step 6: Final answer
    x = 19,066.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.