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Finding the Fourth Proportional to 27,975.96, 38,606.70 and 15,400.70

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Solution

The fourth proportional to 27,975.96, 38,606.70 and 15,400.70 is: 21,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,975.96 : 38,606.70 = 15,400.70 : x
  2. Step 2: Convert to fraction form
    27,975.96/38,606.70 = 15,400.70/x
  3. Step 3: Cross multiply
    27,975.96x = 38,606.70 × 15,400.70
  4. Step 4: Simplify right side
    27,975.96x = 594,570,204.69
  5. Step 5: Solve for x
    x = 594,570,204.69/27,975.96
  6. Step 6: Final answer
    x = 21,252.90

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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.