Home / 11,678.13-16,116.29-6,643.23

Finding the Fourth Proportional to 11,678.13, 16,116.29 and 6,643.23

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Solution

The fourth proportional to 11,678.13, 16,116.29 and 6,643.23 is: 9,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.13 : 16,116.29 = 6,643.23 : x
  2. Step 2: Convert to fraction form
    11,678.13/16,116.29 = 6,643.23/x
  3. Step 3: Cross multiply
    11,678.13x = 16,116.29 × 6,643.23
  4. Step 4: Simplify right side
    11,678.13x = 107,064,188.00
  5. Step 5: Solve for x
    x = 107,064,188.00/11,678.13
  6. Step 6: Final answer
    x = 9,167.92

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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.