Home / 21,287,475.80-31,951,401.16-13,175,914.67

Finding the Fourth Proportional to 21,287,475.80, 31,951,401.16 and 13,175,914.67

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Solution

The fourth proportional to 21,287,475.80, 31,951,401.16 and 13,175,914.67 is: 19,776,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,475.80 : 31,951,401.16 = 13,175,914.67 : x
  2. Step 2: Convert to fraction form
    21,287,475.80/31,951,401.16 = 13,175,914.67/x
  3. Step 3: Cross multiply
    21,287,475.80x = 31,951,401.16 × 13,175,914.67
  4. Step 4: Simplify right side
    21,287,475.80x = 420,988,935,271,099
  5. Step 5: Solve for x
    x = 420,988,935,271,099/21,287,475.80
  6. Step 6: Final answer
    x = 19,776,367.06

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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.