Home / 13,123,139.40-19,684,709.10-12,325,977.90

Finding the Fourth Proportional to 13,123,139.40, 19,684,709.10 and 12,325,977.90

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Solution

The fourth proportional to 13,123,139.40, 19,684,709.10 and 12,325,977.90 is: 18,488,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123,139.40 : 19,684,709.10 = 12,325,977.90 : x
  2. Step 2: Convert to fraction form
    13,123,139.40/19,684,709.10 = 12,325,977.90/x
  3. Step 3: Cross multiply
    13,123,139.40x = 19,684,709.10 × 12,325,977.90
  4. Step 4: Simplify right side
    13,123,139.40x = 242,633,289,334,528.91
  5. Step 5: Solve for x
    x = 242,633,289,334,528.91/13,123,139.40
  6. Step 6: Final answer
    x = 18,488,966.85

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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.