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Finding the Fourth Proportional to 39,866.40, 59,803.92 and 14,918.40

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Solution

The fourth proportional to 39,866.40, 59,803.92 and 14,918.40 is: 22,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866.40 : 59,803.92 = 14,918.40 : x
  2. Step 2: Convert to fraction form
    39,866.40/59,803.92 = 14,918.40/x
  3. Step 3: Cross multiply
    39,866.40x = 59,803.92 × 14,918.40
  4. Step 4: Simplify right side
    39,866.40x = 892,178,800.13
  5. Step 5: Solve for x
    x = 892,178,800.13/39,866.40
  6. Step 6: Final answer
    x = 22,379.22

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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.