Home / 15,381.68-21,204.60-10,958

Finding the Fourth Proportional to 15,381.68, 21,204.60 and 10,958

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Solution

The fourth proportional to 15,381.68, 21,204.60 and 10,958 is: 15,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.68 : 21,204.60 = 10,958 : x
  2. Step 2: Convert to fraction form
    15,381.68/21,204.60 = 10,958/x
  3. Step 3: Cross multiply
    15,381.68x = 21,204.60 × 10,958
  4. Step 4: Simplify right side
    15,381.68x = 232,360,006.80
  5. Step 5: Solve for x
    x = 232,360,006.80/15,381.68
  6. Step 6: Final answer
    x = 15,106.28

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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.