Home / 15,701.64-21,668.28-8,628.48

Finding the Fourth Proportional to 15,701.64, 21,668.28 and 8,628.48

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Solution

The fourth proportional to 15,701.64, 21,668.28 and 8,628.48 is: 11,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.64 : 21,668.28 = 8,628.48 : x
  2. Step 2: Convert to fraction form
    15,701.64/21,668.28 = 8,628.48/x
  3. Step 3: Cross multiply
    15,701.64x = 21,668.28 × 8,628.48
  4. Step 4: Simplify right side
    15,701.64x = 186,964,320.61
  5. Step 5: Solve for x
    x = 186,964,320.61/15,701.64
  6. Step 6: Final answer
    x = 11,907.31

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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.