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Finding the Fourth Proportional to 39,807.16, 59,708.58 and 12,103

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Solution

The fourth proportional to 39,807.16, 59,708.58 and 12,103 is: 18,153.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.16 : 59,708.58 = 12,103 : x
  2. Step 2: Convert to fraction form
    39,807.16/59,708.58 = 12,103/x
  3. Step 3: Cross multiply
    39,807.16x = 59,708.58 × 12,103
  4. Step 4: Simplify right side
    39,807.16x = 722,652,943.74
  5. Step 5: Solve for x
    x = 722,652,943.74/39,807.16
  6. Step 6: Final answer
    x = 18,153.84

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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.