Home / 18,783.21-28,189.10-6,948.18

Finding the Fourth Proportional to 18,783.21, 28,189.10 and 6,948.18

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Solution

The fourth proportional to 18,783.21, 28,189.10 and 6,948.18 is: 10,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.21 : 28,189.10 = 6,948.18 : x
  2. Step 2: Convert to fraction form
    18,783.21/28,189.10 = 6,948.18/x
  3. Step 3: Cross multiply
    18,783.21x = 28,189.10 × 6,948.18
  4. Step 4: Simplify right side
    18,783.21x = 195,862,940.84
  5. Step 5: Solve for x
    x = 195,862,940.84/18,783.21
  6. Step 6: Final answer
    x = 10,427.55

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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.