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Finding the Fourth Proportional to 27,045.51, 40,540.90 and 12,984.99

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Solution

The fourth proportional to 27,045.51, 40,540.90 and 12,984.99 is: 19,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,045.51 : 40,540.90 = 12,984.99 : x
  2. Step 2: Convert to fraction form
    27,045.51/40,540.90 = 12,984.99/x
  3. Step 3: Cross multiply
    27,045.51x = 40,540.90 × 12,984.99
  4. Step 4: Simplify right side
    27,045.51x = 526,423,181.09
  5. Step 5: Solve for x
    x = 526,423,181.09/27,045.51
  6. Step 6: Final answer
    x = 19,464.35

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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.