Home / 15,702.14-21,668.18-8,628.82

Finding the Fourth Proportional to 15,702.14, 21,668.18 and 8,628.82

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Solution

The fourth proportional to 15,702.14, 21,668.18 and 8,628.82 is: 11,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.14 : 21,668.18 = 8,628.82 : x
  2. Step 2: Convert to fraction form
    15,702.14/21,668.18 = 8,628.82/x
  3. Step 3: Cross multiply
    15,702.14x = 21,668.18 × 8,628.82
  4. Step 4: Simplify right side
    15,702.14x = 186,970,727.63
  5. Step 5: Solve for x
    x = 186,970,727.63/15,702.14
  6. Step 6: Final answer
    x = 11,907.34

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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.