Home / 12,156,766.70-18,235,150.05-7,105,477.10

Finding the Fourth Proportional to 12,156,766.70, 18,235,150.05 and 7,105,477.10

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Solution

The fourth proportional to 12,156,766.70, 18,235,150.05 and 7,105,477.10 is: 10,658,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156,766.70 : 18,235,150.05 = 7,105,477.10 : x
  2. Step 2: Convert to fraction form
    12,156,766.70/18,235,150.05 = 7,105,477.10/x
  3. Step 3: Cross multiply
    12,156,766.70x = 18,235,150.05 × 7,105,477.10
  4. Step 4: Simplify right side
    12,156,766.70x = 129,569,441,095,338.86
  5. Step 5: Solve for x
    x = 129,569,441,095,338.86/12,156,766.70
  6. Step 6: Final answer
    x = 10,658,215.65

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1.5x scale

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.