Home / 28,021.10-38,668.58-15,274.40

Finding the Fourth Proportional to 28,021.10, 38,668.58 and 15,274.40

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Solution

The fourth proportional to 28,021.10, 38,668.58 and 15,274.40 is: 21,078.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.10 : 38,668.58 = 15,274.40 : x
  2. Step 2: Convert to fraction form
    28,021.10/38,668.58 = 15,274.40/x
  3. Step 3: Cross multiply
    28,021.10x = 38,668.58 × 15,274.40
  4. Step 4: Simplify right side
    28,021.10x = 590,639,358.35
  5. Step 5: Solve for x
    x = 590,639,358.35/28,021.10
  6. Step 6: Final answer
    x = 21,078.38

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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.