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Finding the Fourth Proportional to 27,485.82, 41,205.65 and 19,141.20

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Solution

The fourth proportional to 27,485.82, 41,205.65 and 19,141.20 is: 28,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,485.82 : 41,205.65 = 19,141.20 : x
  2. Step 2: Convert to fraction form
    27,485.82/41,205.65 = 19,141.20/x
  3. Step 3: Cross multiply
    27,485.82x = 41,205.65 × 19,141.20
  4. Step 4: Simplify right side
    27,485.82x = 788,725,492.07
  5. Step 5: Solve for x
    x = 788,725,492.07/27,485.82
  6. Step 6: Final answer
    x = 28,695.72

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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.