Home / 21,036,670.70-31,555,006.05-20,186,365.10

Finding the Fourth Proportional to 21,036,670.70, 31,555,006.05 and 20,186,365.10

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Solution

The fourth proportional to 21,036,670.70, 31,555,006.05 and 20,186,365.10 is: 30,279,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036,670.70 : 31,555,006.05 = 20,186,365.10 : x
  2. Step 2: Convert to fraction form
    21,036,670.70/31,555,006.05 = 20,186,365.10/x
  3. Step 3: Cross multiply
    21,036,670.70x = 31,555,006.05 × 20,186,365.10
  4. Step 4: Simplify right side
    21,036,670.70x = 636,980,872,858,008.88
  5. Step 5: Solve for x
    x = 636,980,872,858,008.88/21,036,670.70
  6. Step 6: Final answer
    x = 30,279,547.65

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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.