Home / 21,397.96-29,529.16-11,966.50

Finding the Fourth Proportional to 21,397.96, 29,529.16 and 11,966.50

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Solution

The fourth proportional to 21,397.96, 29,529.16 and 11,966.50 is: 16,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.96 : 29,529.16 = 11,966.50 : x
  2. Step 2: Convert to fraction form
    21,397.96/29,529.16 = 11,966.50/x
  3. Step 3: Cross multiply
    21,397.96x = 29,529.16 × 11,966.50
  4. Step 4: Simplify right side
    21,397.96x = 353,360,693.14
  5. Step 5: Solve for x
    x = 353,360,693.14/21,397.96
  6. Step 6: Final answer
    x = 16,513.76

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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.