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Finding the Fourth Proportional to 17,085.90, 25,628.85 and 9,309.90

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Solution

The fourth proportional to 17,085.90, 25,628.85 and 9,309.90 is: 13,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,085.90 : 25,628.85 = 9,309.90 : x
  2. Step 2: Convert to fraction form
    17,085.90/25,628.85 = 9,309.90/x
  3. Step 3: Cross multiply
    17,085.90x = 25,628.85 × 9,309.90
  4. Step 4: Simplify right side
    17,085.90x = 238,602,030.62
  5. Step 5: Solve for x
    x = 238,602,030.62/17,085.90
  6. Step 6: Final answer
    x = 13,964.85

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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.