Home / 21,178,051.80-31,767,077.70-19,902,593.40

Finding the Fourth Proportional to 21,178,051.80, 31,767,077.70 and 19,902,593.40

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Solution

The fourth proportional to 21,178,051.80, 31,767,077.70 and 19,902,593.40 is: 29,853,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178,051.80 : 31,767,077.70 = 19,902,593.40 : x
  2. Step 2: Convert to fraction form
    21,178,051.80/31,767,077.70 = 19,902,593.40/x
  3. Step 3: Cross multiply
    21,178,051.80x = 31,767,077.70 × 19,902,593.40
  4. Step 4: Simplify right side
    21,178,051.80x = 632,247,230,969,307.12
  5. Step 5: Solve for x
    x = 632,247,230,969,307.12/21,178,051.80
  6. Step 6: Final answer
    x = 29,853,890.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.