Home / 21,039,848.20-31,551,899.10-7,387,719.40

Finding the Fourth Proportional to 21,039,848.20, 31,551,899.10 and 7,387,719.40

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Solution

The fourth proportional to 21,039,848.20, 31,551,899.10 and 7,387,719.40 is: 11,078,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039,848.20 : 31,551,899.10 = 7,387,719.40 : x
  2. Step 2: Convert to fraction form
    21,039,848.20/31,551,899.10 = 7,387,719.40/x
  3. Step 3: Cross multiply
    21,039,848.20x = 31,551,899.10 × 7,387,719.40
  4. Step 4: Simplify right side
    21,039,848.20x = 233,096,577,087,912.56
  5. Step 5: Solve for x
    x = 233,096,577,087,912.56/21,039,848.20
  6. Step 6: Final answer
    x = 11,078,814.58

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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.