Home / 12,812,981.40-19,224,137.70-5,245,378.20

Finding the Fourth Proportional to 12,812,981.40, 19,224,137.70 and 5,245,378.20

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Solution

The fourth proportional to 12,812,981.40, 19,224,137.70 and 5,245,378.20 is: 7,869,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812,981.40 : 19,224,137.70 = 5,245,378.20 : x
  2. Step 2: Convert to fraction form
    12,812,981.40/19,224,137.70 = 5,245,378.20/x
  3. Step 3: Cross multiply
    12,812,981.40x = 19,224,137.70 × 5,245,378.20
  4. Step 4: Simplify right side
    12,812,981.40x = 100,837,872,805,378.14
  5. Step 5: Solve for x
    x = 100,837,872,805,378.14/12,812,981.40
  6. Step 6: Final answer
    x = 7,869,977.30

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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.