Home / 21,137,423.66-29,170,362.72-20,168,872.46

Finding the Fourth Proportional to 21,137,423.66, 29,170,362.72 and 20,168,872.46

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Solution

The fourth proportional to 21,137,423.66, 29,170,362.72 and 20,168,872.46 is: 27,833,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137,423.66 : 29,170,362.72 = 20,168,872.46 : x
  2. Step 2: Convert to fraction form
    21,137,423.66/29,170,362.72 = 20,168,872.46/x
  3. Step 3: Cross multiply
    21,137,423.66x = 29,170,362.72 × 20,168,872.46
  4. Step 4: Simplify right side
    21,137,423.66x = 588,333,325,311,618.75
  5. Step 5: Solve for x
    x = 588,333,325,311,618.75/21,137,423.66
  6. Step 6: Final answer
    x = 27,833,729.16

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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.