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Finding the Fourth Proportional to 11,856.99, 16,370.28 and 7,609.89

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Solution

The fourth proportional to 11,856.99, 16,370.28 and 7,609.89 is: 10,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.99 : 16,370.28 = 7,609.89 : x
  2. Step 2: Convert to fraction form
    11,856.99/16,370.28 = 7,609.89/x
  3. Step 3: Cross multiply
    11,856.99x = 16,370.28 × 7,609.89
  4. Step 4: Simplify right side
    11,856.99x = 124,576,030.07
  5. Step 5: Solve for x
    x = 124,576,030.07/11,856.99
  6. Step 6: Final answer
    x = 10,506.55

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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.