Home / 15,702.20-21,668.61-8,628.63

Finding the Fourth Proportional to 15,702.20, 21,668.61 and 8,628.63

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Solution

The fourth proportional to 15,702.20, 21,668.61 and 8,628.63 is: 11,907.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.20 : 21,668.61 = 8,628.63 : x
  2. Step 2: Convert to fraction form
    15,702.20/21,668.61 = 8,628.63/x
  3. Step 3: Cross multiply
    15,702.20x = 21,668.61 × 8,628.63
  4. Step 4: Simplify right side
    15,702.20x = 186,970,369.40
  5. Step 5: Solve for x
    x = 186,970,369.40/15,702.20
  6. Step 6: Final answer
    x = 11,907.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.