Home / 12,319,861.38-18,470,343.81-7,529,806.50

Finding the Fourth Proportional to 12,319,861.38, 18,470,343.81 and 7,529,806.50

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Solution

The fourth proportional to 12,319,861.38, 18,470,343.81 and 7,529,806.50 is: 11,288,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319,861.38 : 18,470,343.81 = 7,529,806.50 : x
  2. Step 2: Convert to fraction form
    12,319,861.38/18,470,343.81 = 7,529,806.50/x
  3. Step 3: Cross multiply
    12,319,861.38x = 18,470,343.81 × 7,529,806.50
  4. Step 4: Simplify right side
    12,319,861.38x = 139,078,114,877,772.75
  5. Step 5: Solve for x
    x = 139,078,114,877,772.75/12,319,861.38
  6. Step 6: Final answer
    x = 11,288,935.04

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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.