Home / 31,803.87-47,704.59-13,078.70

Finding the Fourth Proportional to 31,803.87, 47,704.59 and 13,078.70

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Solution

The fourth proportional to 31,803.87, 47,704.59 and 13,078.70 is: 19,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,803.87 : 47,704.59 = 13,078.70 : x
  2. Step 2: Convert to fraction form
    31,803.87/47,704.59 = 13,078.70/x
  3. Step 3: Cross multiply
    31,803.87x = 47,704.59 × 13,078.70
  4. Step 4: Simplify right side
    31,803.87x = 623,913,782.71
  5. Step 5: Solve for x
    x = 623,913,782.71/31,803.87
  6. Step 6: Final answer
    x = 19,617.54

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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.