Home / 27,783.12-38,339.76-15,850.32

Finding the Fourth Proportional to 27,783.12, 38,339.76 and 15,850.32

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Solution

The fourth proportional to 27,783.12, 38,339.76 and 15,850.32 is: 21,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,783.12 : 38,339.76 = 15,850.32 : x
  2. Step 2: Convert to fraction form
    27,783.12/38,339.76 = 15,850.32/x
  3. Step 3: Cross multiply
    27,783.12x = 38,339.76 × 15,850.32
  4. Step 4: Simplify right side
    27,783.12x = 607,697,464.72
  5. Step 5: Solve for x
    x = 607,697,464.72/27,783.12
  6. Step 6: Final answer
    x = 21,872.90

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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.