Home / 20,885,412.24-28,823,692.68-12,186,387.36

Finding the Fourth Proportional to 20,885,412.24, 28,823,692.68 and 12,186,387.36

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Solution

The fourth proportional to 20,885,412.24, 28,823,692.68 and 12,186,387.36 is: 16,818,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,412.24 : 28,823,692.68 = 12,186,387.36 : x
  2. Step 2: Convert to fraction form
    20,885,412.24/28,823,692.68 = 12,186,387.36/x
  3. Step 3: Cross multiply
    20,885,412.24x = 28,823,692.68 × 12,186,387.36
  4. Step 4: Simplify right side
    20,885,412.24x = 351,256,684,144,076.50
  5. Step 5: Solve for x
    x = 351,256,684,144,076.50/20,885,412.24
  6. Step 6: Final answer
    x = 16,818,278.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.