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Finding the Fourth Proportional to 21,868.03, 32,803.06 and 7,078.11

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Solution

The fourth proportional to 21,868.03, 32,803.06 and 7,078.11 is: 10,617.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.03 : 32,803.06 = 7,078.11 : x
  2. Step 2: Convert to fraction form
    21,868.03/32,803.06 = 7,078.11/x
  3. Step 3: Cross multiply
    21,868.03x = 32,803.06 × 7,078.11
  4. Step 4: Simplify right side
    21,868.03x = 232,183,667.02
  5. Step 5: Solve for x
    x = 232,183,667.02/21,868.03
  6. Step 6: Final answer
    x = 10,617.49

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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.