Home / 28,010.19-42,021.77-12,429.03

Finding the Fourth Proportional to 28,010.19, 42,021.77 and 12,429.03

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Solution

The fourth proportional to 28,010.19, 42,021.77 and 12,429.03 is: 18,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.19 : 42,021.77 = 12,429.03 : x
  2. Step 2: Convert to fraction form
    28,010.19/42,021.77 = 12,429.03/x
  3. Step 3: Cross multiply
    28,010.19x = 42,021.77 × 12,429.03
  4. Step 4: Simplify right side
    28,010.19x = 522,289,777.84
  5. Step 5: Solve for x
    x = 522,289,777.84/28,010.19
  6. Step 6: Final answer
    x = 18,646.42

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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.