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Finding the Fourth Proportional to 27,905.63, 38,510.03 and 15,330.65

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Solution

The fourth proportional to 27,905.63, 38,510.03 and 15,330.65 is: 21,156.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.63 : 38,510.03 = 15,330.65 : x
  2. Step 2: Convert to fraction form
    27,905.63/38,510.03 = 15,330.65/x
  3. Step 3: Cross multiply
    27,905.63x = 38,510.03 × 15,330.65
  4. Step 4: Simplify right side
    27,905.63x = 590,383,637.20
  5. Step 5: Solve for x
    x = 590,383,637.20/27,905.63
  6. Step 6: Final answer
    x = 21,156.44

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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.