Home / 39,815.22-59,731.47-12,112.50

Finding the Fourth Proportional to 39,815.22, 59,731.47 and 12,112.50

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Solution

The fourth proportional to 39,815.22, 59,731.47 and 12,112.50 is: 18,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.22 : 59,731.47 = 12,112.50 : x
  2. Step 2: Convert to fraction form
    39,815.22/59,731.47 = 12,112.50/x
  3. Step 3: Cross multiply
    39,815.22x = 59,731.47 × 12,112.50
  4. Step 4: Simplify right side
    39,815.22x = 723,497,430.38
  5. Step 5: Solve for x
    x = 723,497,430.38/39,815.22
  6. Step 6: Final answer
    x = 18,171.38

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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.