Home / 11,948.51-16,489.98-6,643.69

Finding the Fourth Proportional to 11,948.51, 16,489.98 and 6,643.69

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Solution

The fourth proportional to 11,948.51, 16,489.98 and 6,643.69 is: 9,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,948.51 : 16,489.98 = 6,643.69 : x
  2. Step 2: Convert to fraction form
    11,948.51/16,489.98 = 6,643.69/x
  3. Step 3: Cross multiply
    11,948.51x = 16,489.98 × 6,643.69
  4. Step 4: Simplify right side
    11,948.51x = 109,554,274.00
  5. Step 5: Solve for x
    x = 109,554,274.00/11,948.51
  6. Step 6: Final answer
    x = 9,168.86

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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.