Home / 19,285.12-28,917.96-9,409.60

Finding the Fourth Proportional to 19,285.12, 28,917.96 and 9,409.60

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Solution

The fourth proportional to 19,285.12, 28,917.96 and 9,409.60 is: 14,109.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.12 : 28,917.96 = 9,409.60 : x
  2. Step 2: Convert to fraction form
    19,285.12/28,917.96 = 9,409.60/x
  3. Step 3: Cross multiply
    19,285.12x = 28,917.96 × 9,409.60
  4. Step 4: Simplify right side
    19,285.12x = 272,106,436.42
  5. Step 5: Solve for x
    x = 272,106,436.42/19,285.12
  6. Step 6: Final answer
    x = 14,109.66

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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.