Home / 12,478,545.70-18,703,072.95-5,290,065.70

Finding the Fourth Proportional to 12,478,545.70, 18,703,072.95 and 5,290,065.70

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Solution

The fourth proportional to 12,478,545.70, 18,703,072.95 and 5,290,065.70 is: 7,928,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,545.70 : 18,703,072.95 = 5,290,065.70 : x
  2. Step 2: Convert to fraction form
    12,478,545.70/18,703,072.95 = 5,290,065.70/x
  3. Step 3: Cross multiply
    12,478,545.70x = 18,703,072.95 × 5,290,065.70
  4. Step 4: Simplify right side
    12,478,545.70x = 98,940,484,697,392.81
  5. Step 5: Solve for x
    x = 98,940,484,697,392.81/12,478,545.70
  6. Step 6: Final answer
    x = 7,928,847.41

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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.