Home / 21,289.16-29,381.35-11,730.03

Finding the Fourth Proportional to 21,289.16, 29,381.35 and 11,730.03

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Solution

The fourth proportional to 21,289.16, 29,381.35 and 11,730.03 is: 16,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.16 : 29,381.35 = 11,730.03 : x
  2. Step 2: Convert to fraction form
    21,289.16/29,381.35 = 11,730.03/x
  3. Step 3: Cross multiply
    21,289.16x = 29,381.35 × 11,730.03
  4. Step 4: Simplify right side
    21,289.16x = 344,644,116.94
  5. Step 5: Solve for x
    x = 344,644,116.94/21,289.16
  6. Step 6: Final answer
    x = 16,188.71

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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.