Home / 31,128.40-46,692.60-10,351.90

Finding the Fourth Proportional to 31,128.40, 46,692.60 and 10,351.90

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Solution

The fourth proportional to 31,128.40, 46,692.60 and 10,351.90 is: 15,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.40 : 46,692.60 = 10,351.90 : x
  2. Step 2: Convert to fraction form
    31,128.40/46,692.60 = 10,351.90/x
  3. Step 3: Cross multiply
    31,128.40x = 46,692.60 × 10,351.90
  4. Step 4: Simplify right side
    31,128.40x = 483,357,125.94
  5. Step 5: Solve for x
    x = 483,357,125.94/31,128.40
  6. Step 6: Final answer
    x = 15,527.85

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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.