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Finding the Fourth Proportional to 38,615.54, 57,927.87 and 12,311.06

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Solution

The fourth proportional to 38,615.54, 57,927.87 and 12,311.06 is: 18,468.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,615.54 : 57,927.87 = 12,311.06 : x
  2. Step 2: Convert to fraction form
    38,615.54/57,927.87 = 12,311.06/x
  3. Step 3: Cross multiply
    38,615.54x = 57,927.87 × 12,311.06
  4. Step 4: Simplify right side
    38,615.54x = 713,153,483.24
  5. Step 5: Solve for x
    x = 713,153,483.24/38,615.54
  6. Step 6: Final answer
    x = 18,468.04

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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.