Home / 28,194.96-42,285.56-9,215.90

Finding the Fourth Proportional to 28,194.96, 42,285.56 and 9,215.90

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Solution

The fourth proportional to 28,194.96, 42,285.56 and 9,215.90 is: 13,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.96 : 42,285.56 = 9,215.90 : x
  2. Step 2: Convert to fraction form
    28,194.96/42,285.56 = 9,215.90/x
  3. Step 3: Cross multiply
    28,194.96x = 42,285.56 × 9,215.90
  4. Step 4: Simplify right side
    28,194.96x = 389,699,492.40
  5. Step 5: Solve for x
    x = 389,699,492.40/28,194.96
  6. Step 6: Final answer
    x = 13,821.60

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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.