Home / 20,620,493.99-28,453,118.40-11,916,985.89

Finding the Fourth Proportional to 20,620,493.99, 28,453,118.40 and 11,916,985.89

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Solution

The fourth proportional to 20,620,493.99, 28,453,118.40 and 11,916,985.89 is: 16,443,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,493.99 : 28,453,118.40 = 11,916,985.89 : x
  2. Step 2: Convert to fraction form
    20,620,493.99/28,453,118.40 = 11,916,985.89/x
  3. Step 3: Cross multiply
    20,620,493.99x = 28,453,118.40 × 11,916,985.89
  4. Step 4: Simplify right side
    20,620,493.99x = 339,075,410,499,299.38
  5. Step 5: Solve for x
    x = 339,075,410,499,299.38/20,620,493.99
  6. Step 6: Final answer
    x = 16,443,612.40

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1.5x scale

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.