Home / 11,147.99-15,381.16-6,897.00

Finding the Fourth Proportional to 11,147.99, 15,381.16 and 6,897.00

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Solution

The fourth proportional to 11,147.99, 15,381.16 and 6,897.00 is: 9,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.99 : 15,381.16 = 6,897.00 : x
  2. Step 2: Convert to fraction form
    11,147.99/15,381.16 = 6,897.00/x
  3. Step 3: Cross multiply
    11,147.99x = 15,381.16 × 6,897.00
  4. Step 4: Simplify right side
    11,147.99x = 106,083,900.96
  5. Step 5: Solve for x
    x = 106,083,900.96/11,147.99
  6. Step 6: Final answer
    x = 9,515.97

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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.