Home / 27,582.80-38,065.72-20,856.88

Finding the Fourth Proportional to 27,582.80, 38,065.72 and 20,856.88

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Solution

The fourth proportional to 27,582.80, 38,065.72 and 20,856.88 is: 28,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,582.80 : 38,065.72 = 20,856.88 : x
  2. Step 2: Convert to fraction form
    27,582.80/38,065.72 = 20,856.88/x
  3. Step 3: Cross multiply
    27,582.80x = 38,065.72 × 20,856.88
  4. Step 4: Simplify right side
    27,582.80x = 793,932,154.15
  5. Step 5: Solve for x
    x = 793,932,154.15/27,582.80
  6. Step 6: Final answer
    x = 28,783.60

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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.