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Finding the Fourth Proportional to 27,958.65, 38,582.64 and 15,212.22

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Solution

The fourth proportional to 27,958.65, 38,582.64 and 15,212.22 is: 20,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,958.65 : 38,582.64 = 15,212.22 : x
  2. Step 2: Convert to fraction form
    27,958.65/38,582.64 = 15,212.22/x
  3. Step 3: Cross multiply
    27,958.65x = 38,582.64 × 15,212.22
  4. Step 4: Simplify right side
    27,958.65x = 586,927,607.86
  5. Step 5: Solve for x
    x = 586,927,607.86/27,958.65
  6. Step 6: Final answer
    x = 20,992.70

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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.