Home / 21,320.14-29,410.66-12,364.38

Finding the Fourth Proportional to 21,320.14, 29,410.66 and 12,364.38

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Solution

The fourth proportional to 21,320.14, 29,410.66 and 12,364.38 is: 17,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.14 : 29,410.66 = 12,364.38 : x
  2. Step 2: Convert to fraction form
    21,320.14/29,410.66 = 12,364.38/x
  3. Step 3: Cross multiply
    21,320.14x = 29,410.66 × 12,364.38
  4. Step 4: Simplify right side
    21,320.14x = 363,644,576.29
  5. Step 5: Solve for x
    x = 363,644,576.29/21,320.14
  6. Step 6: Final answer
    x = 17,056.39

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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.