Home / 31,865.01-47,799.14-12,139.89

Finding the Fourth Proportional to 31,865.01, 47,799.14 and 12,139.89

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Solution

The fourth proportional to 31,865.01, 47,799.14 and 12,139.89 is: 18,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.01 : 47,799.14 = 12,139.89 : x
  2. Step 2: Convert to fraction form
    31,865.01/47,799.14 = 12,139.89/x
  3. Step 3: Cross multiply
    31,865.01x = 47,799.14 × 12,139.89
  4. Step 4: Simplify right side
    31,865.01x = 580,276,241.00
  5. Step 5: Solve for x
    x = 580,276,241.00/31,865.01
  6. Step 6: Final answer
    x = 18,210.45

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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.