Home / 11,814.06-16,288.20-9,681.78

Finding the Fourth Proportional to 11,814.06, 16,288.20 and 9,681.78

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Solution

The fourth proportional to 11,814.06, 16,288.20 and 9,681.78 is: 13,348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,814.06 : 16,288.20 = 9,681.78 : x
  2. Step 2: Convert to fraction form
    11,814.06/16,288.20 = 9,681.78/x
  3. Step 3: Cross multiply
    11,814.06x = 16,288.20 × 9,681.78
  4. Step 4: Simplify right side
    11,814.06x = 157,698,769.00
  5. Step 5: Solve for x
    x = 157,698,769.00/11,814.06
  6. Step 6: Final answer
    x = 13,348.40

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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.