Home / 21,409.36-29,553.12-14,333.20

Finding the Fourth Proportional to 21,409.36, 29,553.12 and 14,333.20

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Solution

The fourth proportional to 21,409.36, 29,553.12 and 14,333.20 is: 19,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.36 : 29,553.12 = 14,333.20 : x
  2. Step 2: Convert to fraction form
    21,409.36/29,553.12 = 14,333.20/x
  3. Step 3: Cross multiply
    21,409.36x = 29,553.12 × 14,333.20
  4. Step 4: Simplify right side
    21,409.36x = 423,590,779.58
  5. Step 5: Solve for x
    x = 423,590,779.58/21,409.36
  6. Step 6: Final answer
    x = 19,785.31

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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.