Home / 31,365.30-47,012.16-12,633.35

Finding the Fourth Proportional to 31,365.30, 47,012.16 and 12,633.35

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Solution

The fourth proportional to 31,365.30, 47,012.16 and 12,633.35 is: 18,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,365.30 : 47,012.16 = 12,633.35 : x
  2. Step 2: Convert to fraction form
    31,365.30/47,012.16 = 12,633.35/x
  3. Step 3: Cross multiply
    31,365.30x = 47,012.16 × 12,633.35
  4. Step 4: Simplify right side
    31,365.30x = 593,920,883.85
  5. Step 5: Solve for x
    x = 593,920,883.85/31,365.30
  6. Step 6: Final answer
    x = 18,935.60

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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.