Home / 13,715.97-18,927.99-7,428.35

Finding the Fourth Proportional to 13,715.97, 18,927.99 and 7,428.35

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Solution

The fourth proportional to 13,715.97, 18,927.99 and 7,428.35 is: 10,251.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.97 : 18,927.99 = 7,428.35 : x
  2. Step 2: Convert to fraction form
    13,715.97/18,927.99 = 7,428.35/x
  3. Step 3: Cross multiply
    13,715.97x = 18,927.99 × 7,428.35
  4. Step 4: Simplify right side
    13,715.97x = 140,603,639.88
  5. Step 5: Solve for x
    x = 140,603,639.88/13,715.97
  6. Step 6: Final answer
    x = 10,251.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.