Home / 21,303,574.05-31,936,698.68-12,787,298.85

Finding the Fourth Proportional to 21,303,574.05, 31,936,698.68 and 12,787,298.85

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Solution

The fourth proportional to 21,303,574.05, 31,936,698.68 and 12,787,298.85 is: 19,169,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303,574.05 : 31,936,698.68 = 12,787,298.85 : x
  2. Step 2: Convert to fraction form
    21,303,574.05/31,936,698.68 = 12,787,298.85/x
  3. Step 3: Cross multiply
    21,303,574.05x = 31,936,698.68 × 12,787,298.85
  4. Step 4: Simplify right side
    21,303,574.05x = 408,384,110,239,624
  5. Step 5: Solve for x
    x = 408,384,110,239,624/21,303,574.05
  6. Step 6: Final answer
    x = 19,169,746.32

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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.