Home / 10,890,123.40-16,340,433.90-7,688,355.40

Finding the Fourth Proportional to 10,890,123.40, 16,340,433.90 and 7,688,355.40

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Solution

The fourth proportional to 10,890,123.40, 16,340,433.90 and 7,688,355.40 is: 11,536,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,123.40 : 16,340,433.90 = 7,688,355.40 : x
  2. Step 2: Convert to fraction form
    10,890,123.40/16,340,433.90 = 7,688,355.40/x
  3. Step 3: Cross multiply
    10,890,123.40x = 16,340,433.90 × 7,688,355.40
  4. Step 4: Simplify right side
    10,890,123.40x = 125,631,063,213,408.06
  5. Step 5: Solve for x
    x = 125,631,063,213,408.06/10,890,123.40
  6. Step 6: Final answer
    x = 11,536,238.72

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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.