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Finding the Fourth Proportional to 18,999.94, 28,503.24 and 6,521.28

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Solution

The fourth proportional to 18,999.94, 28,503.24 and 6,521.28 is: 9,783.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.94 : 28,503.24 = 6,521.28 : x
  2. Step 2: Convert to fraction form
    18,999.94/28,503.24 = 6,521.28/x
  3. Step 3: Cross multiply
    18,999.94x = 28,503.24 × 6,521.28
  4. Step 4: Simplify right side
    18,999.94x = 185,877,608.95
  5. Step 5: Solve for x
    x = 185,877,608.95/18,999.94
  6. Step 6: Final answer
    x = 9,783.06

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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.