Home / 28,543,638.89-39,390,361.88-15,490,912.79

Finding the Fourth Proportional to 28,543,638.89, 39,390,361.88 and 15,490,912.79

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Solution

The fourth proportional to 28,543,638.89, 39,390,361.88 and 15,490,912.79 is: 21,377,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543,638.89 : 39,390,361.88 = 15,490,912.79 : x
  2. Step 2: Convert to fraction form
    28,543,638.89/39,390,361.88 = 15,490,912.79/x
  3. Step 3: Cross multiply
    28,543,638.89x = 39,390,361.88 × 15,490,912.79
  4. Step 4: Simplify right side
    28,543,638.89x = 610,192,660,572,165.88
  5. Step 5: Solve for x
    x = 610,192,660,572,165.88/28,543,638.89
  6. Step 6: Final answer
    x = 21,377,535.75

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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.