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Finding the Fourth Proportional to 27,776.64, 41,636.88 and 13,896.48

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Solution

The fourth proportional to 27,776.64, 41,636.88 and 13,896.48 is: 20,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,776.64 : 41,636.88 = 13,896.48 : x
  2. Step 2: Convert to fraction form
    27,776.64/41,636.88 = 13,896.48/x
  3. Step 3: Cross multiply
    27,776.64x = 41,636.88 × 13,896.48
  4. Step 4: Simplify right side
    27,776.64x = 578,606,070.18
  5. Step 5: Solve for x
    x = 578,606,070.18/27,776.64
  6. Step 6: Final answer
    x = 20,830.67

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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.