Home / 21,207.36-29,256.56-13,650.98

Finding the Fourth Proportional to 21,207.36, 29,256.56 and 13,650.98

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Solution

The fourth proportional to 21,207.36, 29,256.56 and 13,650.98 is: 18,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.36 : 29,256.56 = 13,650.98 : x
  2. Step 2: Convert to fraction form
    21,207.36/29,256.56 = 13,650.98/x
  3. Step 3: Cross multiply
    21,207.36x = 29,256.56 × 13,650.98
  4. Step 4: Simplify right side
    21,207.36x = 399,380,715.43
  5. Step 5: Solve for x
    x = 399,380,715.43/21,207.36
  6. Step 6: Final answer
    x = 18,832.18

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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.