Home / 21,457.08-29,602.11-13,385.97

Finding the Fourth Proportional to 21,457.08, 29,602.11 and 13,385.97

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Solution

The fourth proportional to 21,457.08, 29,602.11 and 13,385.97 is: 18,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.08 : 29,602.11 = 13,385.97 : x
  2. Step 2: Convert to fraction form
    21,457.08/29,602.11 = 13,385.97/x
  3. Step 3: Cross multiply
    21,457.08x = 29,602.11 × 13,385.97
  4. Step 4: Simplify right side
    21,457.08x = 396,252,956.40
  5. Step 5: Solve for x
    x = 396,252,956.40/21,457.08
  6. Step 6: Final answer
    x = 18,467.24

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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.