Home / 19,143.84-28,722.96-6,664.80

Finding the Fourth Proportional to 19,143.84, 28,722.96 and 6,664.80

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Solution

The fourth proportional to 19,143.84, 28,722.96 and 6,664.80 is: 9,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.84 : 28,722.96 = 6,664.80 : x
  2. Step 2: Convert to fraction form
    19,143.84/28,722.96 = 6,664.80/x
  3. Step 3: Cross multiply
    19,143.84x = 28,722.96 × 6,664.80
  4. Step 4: Simplify right side
    19,143.84x = 191,432,783.81
  5. Step 5: Solve for x
    x = 191,432,783.81/19,143.84
  6. Step 6: Final answer
    x = 9,999.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.