Home / 21,221,892.90-31,839,565.05-7,574,736.78

Finding the Fourth Proportional to 21,221,892.90, 31,839,565.05 and 7,574,736.78

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Solution

The fourth proportional to 21,221,892.90, 31,839,565.05 and 7,574,736.78 is: 11,364,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221,892.90 : 31,839,565.05 = 7,574,736.78 : x
  2. Step 2: Convert to fraction form
    21,221,892.90/31,839,565.05 = 7,574,736.78/x
  3. Step 3: Cross multiply
    21,221,892.90x = 31,839,565.05 × 7,574,736.78
  4. Step 4: Simplify right side
    21,221,892.90x = 241,176,324,443,437.56
  5. Step 5: Solve for x
    x = 241,176,324,443,437.56/21,221,892.90
  6. Step 6: Final answer
    x = 11,364,505.78

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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.