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Finding the Fourth Proportional to 38,767.65, 53,500.65 and 21,774.89

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Solution

The fourth proportional to 38,767.65, 53,500.65 and 21,774.89 is: 30,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,767.65 : 53,500.65 = 21,774.89 : x
  2. Step 2: Convert to fraction form
    38,767.65/53,500.65 = 21,774.89/x
  3. Step 3: Cross multiply
    38,767.65x = 53,500.65 × 21,774.89
  4. Step 4: Simplify right side
    38,767.65x = 1,164,970,768.68
  5. Step 5: Solve for x
    x = 1,164,970,768.68/38,767.65
  6. Step 6: Final answer
    x = 30,050.07

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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.