Home / 15,835.65-21,852.86-8,665.54

Finding the Fourth Proportional to 15,835.65, 21,852.86 and 8,665.54

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Solution

The fourth proportional to 15,835.65, 21,852.86 and 8,665.54 is: 11,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.65 : 21,852.86 = 8,665.54 : x
  2. Step 2: Convert to fraction form
    15,835.65/21,852.86 = 8,665.54/x
  3. Step 3: Cross multiply
    15,835.65x = 21,852.86 × 8,665.54
  4. Step 4: Simplify right side
    15,835.65x = 189,366,734.48
  5. Step 5: Solve for x
    x = 189,366,734.48/15,835.65
  6. Step 6: Final answer
    x = 11,958.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.