Home / 31,009.82-46,530.11-12,289.45

Finding the Fourth Proportional to 31,009.82, 46,530.11 and 12,289.45

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Solution

The fourth proportional to 31,009.82, 46,530.11 and 12,289.45 is: 18,440.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,009.82 : 46,530.11 = 12,289.45 : x
  2. Step 2: Convert to fraction form
    31,009.82/46,530.11 = 12,289.45/x
  3. Step 3: Cross multiply
    31,009.82x = 46,530.11 × 12,289.45
  4. Step 4: Simplify right side
    31,009.82x = 571,829,279.27
  5. Step 5: Solve for x
    x = 571,829,279.27/31,009.82
  6. Step 6: Final answer
    x = 18,440.26

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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.