Home / 15,701.58-21,668.58-8,628.66

Finding the Fourth Proportional to 15,701.58, 21,668.58 and 8,628.66

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Solution

The fourth proportional to 15,701.58, 21,668.58 and 8,628.66 is: 11,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.58 : 21,668.58 = 8,628.66 : x
  2. Step 2: Convert to fraction form
    15,701.58/21,668.58 = 8,628.66/x
  3. Step 3: Cross multiply
    15,701.58x = 21,668.58 × 8,628.66
  4. Step 4: Simplify right side
    15,701.58x = 186,970,809.50
  5. Step 5: Solve for x
    x = 186,970,809.50/15,701.58
  6. Step 6: Final answer
    x = 11,907.77

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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.