Home / 20,864,411.68-31,274,528.79-7,018,189.06

Finding the Fourth Proportional to 20,864,411.68, 31,274,528.79 and 7,018,189.06

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Solution

The fourth proportional to 20,864,411.68, 31,274,528.79 and 7,018,189.06 is: 10,519,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864,411.68 : 31,274,528.79 = 7,018,189.06 : x
  2. Step 2: Convert to fraction form
    20,864,411.68/31,274,528.79 = 7,018,189.06/x
  3. Step 3: Cross multiply
    20,864,411.68x = 31,274,528.79 × 7,018,189.06
  4. Step 4: Simplify right side
    20,864,411.68x = 219,490,555,810,633.03
  5. Step 5: Solve for x
    x = 219,490,555,810,633.03/20,864,411.68
  6. Step 6: Final answer
    x = 10,519,853.58

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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.