Home / 14,286.70-19,715.43-7,999.30

Finding the Fourth Proportional to 14,286.70, 19,715.43 and 7,999.30

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Solution

The fourth proportional to 14,286.70, 19,715.43 and 7,999.30 is: 11,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,286.70 : 19,715.43 = 7,999.30 : x
  2. Step 2: Convert to fraction form
    14,286.70/19,715.43 = 7,999.30/x
  3. Step 3: Cross multiply
    14,286.70x = 19,715.43 × 7,999.30
  4. Step 4: Simplify right side
    14,286.70x = 157,709,639.20
  5. Step 5: Solve for x
    x = 157,709,639.20/14,286.70
  6. Step 6: Final answer
    x = 11,038.91

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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.