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Finding the Fourth Proportional to 17,980.91, 26,985.48 and 12,473.01

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Solution

The fourth proportional to 17,980.91, 26,985.48 and 12,473.01 is: 18,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.91 : 26,985.48 = 12,473.01 : x
  2. Step 2: Convert to fraction form
    17,980.91/26,985.48 = 12,473.01/x
  3. Step 3: Cross multiply
    17,980.91x = 26,985.48 × 12,473.01
  4. Step 4: Simplify right side
    17,980.91x = 336,590,161.89
  5. Step 5: Solve for x
    x = 336,590,161.89/17,980.91
  6. Step 6: Final answer
    x = 18,719.31

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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.