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Finding the Fourth Proportional to 38,940.57, 58,410.86 and 10,859.49

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Solution

The fourth proportional to 38,940.57, 58,410.86 and 10,859.49 is: 16,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,940.57 : 58,410.86 = 10,859.49 : x
  2. Step 2: Convert to fraction form
    38,940.57/58,410.86 = 10,859.49/x
  3. Step 3: Cross multiply
    38,940.57x = 58,410.86 × 10,859.49
  4. Step 4: Simplify right side
    38,940.57x = 634,312,095.76
  5. Step 5: Solve for x
    x = 634,312,095.76/38,940.57
  6. Step 6: Final answer
    x = 16,289.24

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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.