Home / 21,663.45-29,902.37-12,714.57

Finding the Fourth Proportional to 21,663.45, 29,902.37 and 12,714.57

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Solution

The fourth proportional to 21,663.45, 29,902.37 and 12,714.57 is: 17,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.45 : 29,902.37 = 12,714.57 : x
  2. Step 2: Convert to fraction form
    21,663.45/29,902.37 = 12,714.57/x
  3. Step 3: Cross multiply
    21,663.45x = 29,902.37 × 12,714.57
  4. Step 4: Simplify right side
    21,663.45x = 380,195,712.96
  5. Step 5: Solve for x
    x = 380,195,712.96/21,663.45
  6. Step 6: Final answer
    x = 17,550.10

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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.