Home / 21,047,333.26-31,376,445.35-20,715,654.16

Finding the Fourth Proportional to 21,047,333.26, 31,376,445.35 and 20,715,654.16

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Solution

The fourth proportional to 21,047,333.26, 31,376,445.35 and 20,715,654.16 is: 30,881,992.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,333.26 : 31,376,445.35 = 20,715,654.16 : x
  2. Step 2: Convert to fraction form
    21,047,333.26/31,376,445.35 = 20,715,654.16/x
  3. Step 3: Cross multiply
    21,047,333.26x = 31,376,445.35 × 20,715,654.16
  4. Step 4: Simplify right side
    21,047,333.26x = 649,983,590,640,740.25
  5. Step 5: Solve for x
    x = 649,983,590,640,740.25/21,047,333.26
  6. Step 6: Final answer
    x = 30,881,992.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.