Home / 20,143,808.70-30,215,713.05-14,085,381.30

Finding the Fourth Proportional to 20,143,808.70, 30,215,713.05 and 14,085,381.30

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Solution

The fourth proportional to 20,143,808.70, 30,215,713.05 and 14,085,381.30 is: 21,128,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143,808.70 : 30,215,713.05 = 14,085,381.30 : x
  2. Step 2: Convert to fraction form
    20,143,808.70/30,215,713.05 = 14,085,381.30/x
  3. Step 3: Cross multiply
    20,143,808.70x = 30,215,713.05 × 14,085,381.30
  4. Step 4: Simplify right side
    20,143,808.70x = 425,599,839,560,636
  5. Step 5: Solve for x
    x = 425,599,839,560,636/20,143,808.70
  6. Step 6: Final answer
    x = 21,128,071.95

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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.