Home / 27,135.21-40,670-13,980.40

Finding the Fourth Proportional to 27,135.21, 40,670 and 13,980.40

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Solution

The fourth proportional to 27,135.21, 40,670 and 13,980.40 is: 20,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,135.21 : 40,670 = 13,980.40 : x
  2. Step 2: Convert to fraction form
    27,135.21/40,670 = 13,980.40/x
  3. Step 3: Cross multiply
    27,135.21x = 40,670 × 13,980.40
  4. Step 4: Simplify right side
    27,135.21x = 568,582,868
  5. Step 5: Solve for x
    x = 568,582,868/27,135.21
  6. Step 6: Final answer
    x = 20,953.69

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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.