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Finding the Fourth Proportional to 18,884.94, 28,303.12 and 7,799.41

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Solution

The fourth proportional to 18,884.94, 28,303.12 and 7,799.41 is: 11,689.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.94 : 28,303.12 = 7,799.41 : x
  2. Step 2: Convert to fraction form
    18,884.94/28,303.12 = 7,799.41/x
  3. Step 3: Cross multiply
    18,884.94x = 28,303.12 × 7,799.41
  4. Step 4: Simplify right side
    18,884.94x = 220,747,637.16
  5. Step 5: Solve for x
    x = 220,747,637.16/18,884.94
  6. Step 6: Final answer
    x = 11,689.08

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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.