Home / 28,830.48-43,262.80-12,189.60

Finding the Fourth Proportional to 28,830.48, 43,262.80 and 12,189.60

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Solution

The fourth proportional to 28,830.48, 43,262.80 and 12,189.60 is: 18,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.48 : 43,262.80 = 12,189.60 : x
  2. Step 2: Convert to fraction form
    28,830.48/43,262.80 = 12,189.60/x
  3. Step 3: Cross multiply
    28,830.48x = 43,262.80 × 12,189.60
  4. Step 4: Simplify right side
    28,830.48x = 527,356,226.88
  5. Step 5: Solve for x
    x = 527,356,226.88/28,830.48
  6. Step 6: Final answer
    x = 18,291.62

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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.