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Finding the Fourth Proportional to 38,587, 57,880.36 and 12,293.86

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Solution

The fourth proportional to 38,587, 57,880.36 and 12,293.86 is: 18,440.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,587 : 57,880.36 = 12,293.86 : x
  2. Step 2: Convert to fraction form
    38,587/57,880.36 = 12,293.86/x
  3. Step 3: Cross multiply
    38,587x = 57,880.36 × 12,293.86
  4. Step 4: Simplify right side
    38,587x = 711,573,042.59
  5. Step 5: Solve for x
    x = 711,573,042.59/38,587
  6. Step 6: Final answer
    x = 18,440.75

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Double scale
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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.