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Finding the Fourth Proportional to 17,988.90, 26,980.92 and 4,842.06

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Solution

The fourth proportional to 17,988.90, 26,980.92 and 4,842.06 is: 7,262.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.90 : 26,980.92 = 4,842.06 : x
  2. Step 2: Convert to fraction form
    17,988.90/26,980.92 = 4,842.06/x
  3. Step 3: Cross multiply
    17,988.90x = 26,980.92 × 4,842.06
  4. Step 4: Simplify right side
    17,988.90x = 130,643,233.50
  5. Step 5: Solve for x
    x = 130,643,233.50/17,988.90
  6. Step 6: Final answer
    x = 7,262.44

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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.