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Finding the Fourth Proportional to 18,783.66, 28,169.70 and 6,300.13

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Solution

The fourth proportional to 18,783.66, 28,169.70 and 6,300.13 is: 9,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.66 : 28,169.70 = 6,300.13 : x
  2. Step 2: Convert to fraction form
    18,783.66/28,169.70 = 6,300.13/x
  3. Step 3: Cross multiply
    18,783.66x = 28,169.70 × 6,300.13
  4. Step 4: Simplify right side
    18,783.66x = 177,472,772.06
  5. Step 5: Solve for x
    x = 177,472,772.06/18,783.66
  6. Step 6: Final answer
    x = 9,448.25

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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.