Home / 28,010.28-42,003.09-8,290.35

Finding the Fourth Proportional to 28,010.28, 42,003.09 and 8,290.35

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Solution

The fourth proportional to 28,010.28, 42,003.09 and 8,290.35 is: 12,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.28 : 42,003.09 = 8,290.35 : x
  2. Step 2: Convert to fraction form
    28,010.28/42,003.09 = 8,290.35/x
  3. Step 3: Cross multiply
    28,010.28x = 42,003.09 × 8,290.35
  4. Step 4: Simplify right side
    28,010.28x = 348,220,317.18
  5. Step 5: Solve for x
    x = 348,220,317.18/28,010.28
  6. Step 6: Final answer
    x = 12,431.88

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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.