Home / 15,702.13-21,668.88-8,628.58

Finding the Fourth Proportional to 15,702.13, 21,668.88 and 8,628.58

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Solution

The fourth proportional to 15,702.13, 21,668.88 and 8,628.58 is: 11,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.13 : 21,668.88 = 8,628.58 : x
  2. Step 2: Convert to fraction form
    15,702.13/21,668.88 = 8,628.58/x
  3. Step 3: Cross multiply
    15,702.13x = 21,668.88 × 8,628.58
  4. Step 4: Simplify right side
    15,702.13x = 186,971,664.59
  5. Step 5: Solve for x
    x = 186,971,664.59/15,702.13
  6. Step 6: Final answer
    x = 11,907.41

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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.