Home / 31,334.64-47,020.80-12,618.72

Finding the Fourth Proportional to 31,334.64, 47,020.80 and 12,618.72

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Solution

The fourth proportional to 31,334.64, 47,020.80 and 12,618.72 is: 18,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,334.64 : 47,020.80 = 12,618.72 : x
  2. Step 2: Convert to fraction form
    31,334.64/47,020.80 = 12,618.72/x
  3. Step 3: Cross multiply
    31,334.64x = 47,020.80 × 12,618.72
  4. Step 4: Simplify right side
    31,334.64x = 593,342,309.38
  5. Step 5: Solve for x
    x = 593,342,309.38/31,334.64
  6. Step 6: Final answer
    x = 18,935.67

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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.