Home / 21,520.72-29,708.70-14,362.60

Finding the Fourth Proportional to 21,520.72, 29,708.70 and 14,362.60

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Solution

The fourth proportional to 21,520.72, 29,708.70 and 14,362.60 is: 19,827.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.72 : 29,708.70 = 14,362.60 : x
  2. Step 2: Convert to fraction form
    21,520.72/29,708.70 = 14,362.60/x
  3. Step 3: Cross multiply
    21,520.72x = 29,708.70 × 14,362.60
  4. Step 4: Simplify right side
    21,520.72x = 426,694,174.62
  5. Step 5: Solve for x
    x = 426,694,174.62/21,520.72
  6. Step 6: Final answer
    x = 19,827.13

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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.