Home / 15,808.37-21,815.63-8,734.79

Finding the Fourth Proportional to 15,808.37, 21,815.63 and 8,734.79

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Solution

The fourth proportional to 15,808.37, 21,815.63 and 8,734.79 is: 12,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.37 : 21,815.63 = 8,734.79 : x
  2. Step 2: Convert to fraction form
    15,808.37/21,815.63 = 8,734.79/x
  3. Step 3: Cross multiply
    15,808.37x = 21,815.63 × 8,734.79
  4. Step 4: Simplify right side
    15,808.37x = 190,554,867.68
  5. Step 5: Solve for x
    x = 190,554,867.68/15,808.37
  6. Step 6: Final answer
    x = 12,054.05

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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.