Home / 21,472.08-29,625.40-13,918.72

Finding the Fourth Proportional to 21,472.08, 29,625.40 and 13,918.72

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Solution

The fourth proportional to 21,472.08, 29,625.40 and 13,918.72 is: 19,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.08 : 29,625.40 = 13,918.72 : x
  2. Step 2: Convert to fraction form
    21,472.08/29,625.40 = 13,918.72/x
  3. Step 3: Cross multiply
    21,472.08x = 29,625.40 × 13,918.72
  4. Step 4: Simplify right side
    21,472.08x = 412,347,647.49
  5. Step 5: Solve for x
    x = 412,347,647.49/21,472.08
  6. Step 6: Final answer
    x = 19,203.90

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1.5x scale

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.