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Finding the Fourth Proportional to 18,646.40, 27,846.88 and 16,188.80

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Solution

The fourth proportional to 18,646.40, 27,846.88 and 16,188.80 is: 24,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.40 : 27,846.88 = 16,188.80 : x
  2. Step 2: Convert to fraction form
    18,646.40/27,846.88 = 16,188.80/x
  3. Step 3: Cross multiply
    18,646.40x = 27,846.88 × 16,188.80
  4. Step 4: Simplify right side
    18,646.40x = 450,807,570.94
  5. Step 5: Solve for x
    x = 450,807,570.94/18,646.40
  6. Step 6: Final answer
    x = 24,176.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.