Home / 27,958.30-38,582.13-20,820.16

Finding the Fourth Proportional to 27,958.30, 38,582.13 and 20,820.16

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Solution

The fourth proportional to 27,958.30, 38,582.13 and 20,820.16 is: 28,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,958.30 : 38,582.13 = 20,820.16 : x
  2. Step 2: Convert to fraction form
    27,958.30/38,582.13 = 20,820.16/x
  3. Step 3: Cross multiply
    27,958.30x = 38,582.13 × 20,820.16
  4. Step 4: Simplify right side
    27,958.30x = 803,286,119.74
  5. Step 5: Solve for x
    x = 803,286,119.74/27,958.30
  6. Step 6: Final answer
    x = 28,731.58

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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.