Home / 31,679.49-47,529.80-10,621.63

Finding the Fourth Proportional to 31,679.49, 47,529.80 and 10,621.63

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Solution

The fourth proportional to 31,679.49, 47,529.80 and 10,621.63 is: 15,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,679.49 : 47,529.80 = 10,621.63 : x
  2. Step 2: Convert to fraction form
    31,679.49/47,529.80 = 10,621.63/x
  3. Step 3: Cross multiply
    31,679.49x = 47,529.80 × 10,621.63
  4. Step 4: Simplify right side
    31,679.49x = 504,843,658.82
  5. Step 5: Solve for x
    x = 504,843,658.82/31,679.49
  6. Step 6: Final answer
    x = 15,935.98

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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.