Home / 15,850.63-21,873.85-8,777.05

Finding the Fourth Proportional to 15,850.63, 21,873.85 and 8,777.05

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Solution

The fourth proportional to 15,850.63, 21,873.85 and 8,777.05 is: 12,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.63 : 21,873.85 = 8,777.05 : x
  2. Step 2: Convert to fraction form
    15,850.63/21,873.85 = 8,777.05/x
  3. Step 3: Cross multiply
    15,850.63x = 21,873.85 × 8,777.05
  4. Step 4: Simplify right side
    15,850.63x = 191,987,875.14
  5. Step 5: Solve for x
    x = 191,987,875.14/15,850.63
  6. Step 6: Final answer
    x = 12,112.32

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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.