Home / 21,415.38-29,566.18-13,976.34

Finding the Fourth Proportional to 21,415.38, 29,566.18 and 13,976.34

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Solution

The fourth proportional to 21,415.38, 29,566.18 and 13,976.34 is: 19,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.38 : 29,566.18 = 13,976.34 : x
  2. Step 2: Convert to fraction form
    21,415.38/29,566.18 = 13,976.34/x
  3. Step 3: Cross multiply
    21,415.38x = 29,566.18 × 13,976.34
  4. Step 4: Simplify right side
    21,415.38x = 413,226,984.18
  5. Step 5: Solve for x
    x = 413,226,984.18/21,415.38
  6. Step 6: Final answer
    x = 19,295.80

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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.