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Finding the Fourth Proportional to 18,672.84, 28,008.90 and 4,632.90

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Solution

The fourth proportional to 18,672.84, 28,008.90 and 4,632.90 is: 6,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.84 : 28,008.90 = 4,632.90 : x
  2. Step 2: Convert to fraction form
    18,672.84/28,008.90 = 4,632.90/x
  3. Step 3: Cross multiply
    18,672.84x = 28,008.90 × 4,632.90
  4. Step 4: Simplify right side
    18,672.84x = 129,762,432.81
  5. Step 5: Solve for x
    x = 129,762,432.81/18,672.84
  6. Step 6: Final answer
    x = 6,949.26

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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.