Home / 15,701.98-21,668.73-8,628.40

Finding the Fourth Proportional to 15,701.98, 21,668.73 and 8,628.40

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Solution

The fourth proportional to 15,701.98, 21,668.73 and 8,628.40 is: 11,907.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.98 : 21,668.73 = 8,628.40 : x
  2. Step 2: Convert to fraction form
    15,701.98/21,668.73 = 8,628.40/x
  3. Step 3: Cross multiply
    15,701.98x = 21,668.73 × 8,628.40
  4. Step 4: Simplify right side
    15,701.98x = 186,966,415.85
  5. Step 5: Solve for x
    x = 186,966,415.85/15,701.98
  6. Step 6: Final answer
    x = 11,907.19

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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.