Home / 21,319.28-29,421.52-12,364.96

Finding the Fourth Proportional to 21,319.28, 29,421.52 and 12,364.96

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Solution

The fourth proportional to 21,319.28, 29,421.52 and 12,364.96 is: 17,064.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.28 : 29,421.52 = 12,364.96 : x
  2. Step 2: Convert to fraction form
    21,319.28/29,421.52 = 12,364.96/x
  3. Step 3: Cross multiply
    21,319.28x = 29,421.52 × 12,364.96
  4. Step 4: Simplify right side
    21,319.28x = 363,795,917.94
  5. Step 5: Solve for x
    x = 363,795,917.94/21,319.28
  6. Step 6: Final answer
    x = 17,064.17

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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.