Home / 27,815.72-41,728.14-13,776.32

Finding the Fourth Proportional to 27,815.72, 41,728.14 and 13,776.32

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Solution

The fourth proportional to 27,815.72, 41,728.14 and 13,776.32 is: 20,666.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.72 : 41,728.14 = 13,776.32 : x
  2. Step 2: Convert to fraction form
    27,815.72/41,728.14 = 13,776.32/x
  3. Step 3: Cross multiply
    27,815.72x = 41,728.14 × 13,776.32
  4. Step 4: Simplify right side
    27,815.72x = 574,860,209.64
  5. Step 5: Solve for x
    x = 574,860,209.64/27,815.72
  6. Step 6: Final answer
    x = 20,666.74

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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.