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Finding the Fourth Proportional to 18,669.52, 28,004.21 and 8,803.45

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Solution

The fourth proportional to 18,669.52, 28,004.21 and 8,803.45 is: 13,205.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.52 : 28,004.21 = 8,803.45 : x
  2. Step 2: Convert to fraction form
    18,669.52/28,004.21 = 8,803.45/x
  3. Step 3: Cross multiply
    18,669.52x = 28,004.21 × 8,803.45
  4. Step 4: Simplify right side
    18,669.52x = 246,533,478.49
  5. Step 5: Solve for x
    x = 246,533,478.49/18,669.52
  6. Step 6: Final answer
    x = 13,205.14

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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.