Home / 13,140.18-19,715.58-9,647.94

Finding the Fourth Proportional to 13,140.18, 19,715.58 and 9,647.94

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Solution

The fourth proportional to 13,140.18, 19,715.58 and 9,647.94 is: 14,475.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.18 : 19,715.58 = 9,647.94 : x
  2. Step 2: Convert to fraction form
    13,140.18/19,715.58 = 9,647.94/x
  3. Step 3: Cross multiply
    13,140.18x = 19,715.58 × 9,647.94
  4. Step 4: Simplify right side
    13,140.18x = 190,214,732.91
  5. Step 5: Solve for x
    x = 190,214,732.91/13,140.18
  6. Step 6: Final answer
    x = 14,475.81

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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.