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Finding the Fourth Proportional to 38,641.61, 57,951.71 and 13,678.37

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Solution

The fourth proportional to 38,641.61, 57,951.71 and 13,678.37 is: 20,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,641.61 : 57,951.71 = 13,678.37 : x
  2. Step 2: Convert to fraction form
    38,641.61/57,951.71 = 13,678.37/x
  3. Step 3: Cross multiply
    38,641.61x = 57,951.71 × 13,678.37
  4. Step 4: Simplify right side
    38,641.61x = 792,685,206.42
  5. Step 5: Solve for x
    x = 792,685,206.42/38,641.61
  6. Step 6: Final answer
    x = 20,513.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.