Home / 12,478,440.15-18,715,912.72-4,280,946.32

Finding the Fourth Proportional to 12,478,440.15, 18,715,912.72 and 4,280,946.32

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Solution

The fourth proportional to 12,478,440.15, 18,715,912.72 and 4,280,946.32 is: 6,420,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,440.15 : 18,715,912.72 = 4,280,946.32 : x
  2. Step 2: Convert to fraction form
    12,478,440.15/18,715,912.72 = 4,280,946.32/x
  3. Step 3: Cross multiply
    12,478,440.15x = 18,715,912.72 × 4,280,946.32
  4. Step 4: Simplify right side
    12,478,440.15x = 80,121,817,720,212.61
  5. Step 5: Solve for x
    x = 80,121,817,720,212.61/12,478,440.15
  6. Step 6: Final answer
    x = 6,420,819.97

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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.