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Finding the Fourth Proportional to 28,013,840.88, 38,659,102.03 and 15,136,784.88

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Solution

The fourth proportional to 28,013,840.88, 38,659,102.03 and 15,136,784.88 is: 20,888,764.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013,840.88 : 38,659,102.03 = 15,136,784.88 : x
  2. Step 2: Convert to fraction form
    28,013,840.88/38,659,102.03 = 15,136,784.88/x
  3. Step 3: Cross multiply
    28,013,840.88x = 38,659,102.03 × 15,136,784.88
  4. Step 4: Simplify right side
    28,013,840.88x = 585,174,511,082,081.38
  5. Step 5: Solve for x
    x = 585,174,511,082,081.38/28,013,840.88
  6. Step 6: Final answer
    x = 20,888,764.01

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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.