Home / 21,474.57-29,631.49-13,931.25

Finding the Fourth Proportional to 21,474.57, 29,631.49 and 13,931.25

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Solution

The fourth proportional to 21,474.57, 29,631.49 and 13,931.25 is: 19,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.57 : 29,631.49 = 13,931.25 : x
  2. Step 2: Convert to fraction form
    21,474.57/29,631.49 = 13,931.25/x
  3. Step 3: Cross multiply
    21,474.57x = 29,631.49 × 13,931.25
  4. Step 4: Simplify right side
    21,474.57x = 412,803,695.06
  5. Step 5: Solve for x
    x = 412,803,695.06/21,474.57
  6. Step 6: Final answer
    x = 19,222.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.