Home / 18,671.98-28,025.55-12,436.37

Finding the Fourth Proportional to 18,671.98, 28,025.55 and 12,436.37

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Solution

The fourth proportional to 18,671.98, 28,025.55 and 12,436.37 is: 18,666.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.98 : 28,025.55 = 12,436.37 : x
  2. Step 2: Convert to fraction form
    18,671.98/28,025.55 = 12,436.37/x
  3. Step 3: Cross multiply
    18,671.98x = 28,025.55 × 12,436.37
  4. Step 4: Simplify right side
    18,671.98x = 348,536,109.25
  5. Step 5: Solve for x
    x = 348,536,109.25/18,671.98
  6. Step 6: Final answer
    x = 18,666.26

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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.