Home / 31,807.22-47,708.40-12,090.20

Finding the Fourth Proportional to 31,807.22, 47,708.40 and 12,090.20

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Solution

The fourth proportional to 31,807.22, 47,708.40 and 12,090.20 is: 18,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807.22 : 47,708.40 = 12,090.20 : x
  2. Step 2: Convert to fraction form
    31,807.22/47,708.40 = 12,090.20/x
  3. Step 3: Cross multiply
    31,807.22x = 47,708.40 × 12,090.20
  4. Step 4: Simplify right side
    31,807.22x = 576,804,097.68
  5. Step 5: Solve for x
    x = 576,804,097.68/31,807.22
  6. Step 6: Final answer
    x = 18,134.38

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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.