Home / 15,702.09-21,668.93-8,628.96

Finding the Fourth Proportional to 15,702.09, 21,668.93 and 8,628.96

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Solution

The fourth proportional to 15,702.09, 21,668.93 and 8,628.96 is: 11,907.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.09 : 21,668.93 = 8,628.96 : x
  2. Step 2: Convert to fraction form
    15,702.09/21,668.93 = 8,628.96/x
  3. Step 3: Cross multiply
    15,702.09x = 21,668.93 × 8,628.96
  4. Step 4: Simplify right side
    15,702.09x = 186,980,330.21
  5. Step 5: Solve for x
    x = 186,980,330.21/15,702.09
  6. Step 6: Final answer
    x = 11,907.99

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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.