Home / 28,190.08-42,290.70-12,607.84

Finding the Fourth Proportional to 28,190.08, 42,290.70 and 12,607.84

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Solution

The fourth proportional to 28,190.08, 42,290.70 and 12,607.84 is: 18,914.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.08 : 42,290.70 = 12,607.84 : x
  2. Step 2: Convert to fraction form
    28,190.08/42,290.70 = 12,607.84/x
  3. Step 3: Cross multiply
    28,190.08x = 42,290.70 × 12,607.84
  4. Step 4: Simplify right side
    28,190.08x = 533,194,379.09
  5. Step 5: Solve for x
    x = 533,194,379.09/28,190.08
  6. Step 6: Final answer
    x = 18,914.26

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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.