Home / 30,303,145.80-45,454,718.70-21,215,504.70

Finding the Fourth Proportional to 30,303,145.80, 45,454,718.70 and 21,215,504.70

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Solution

The fourth proportional to 30,303,145.80, 45,454,718.70 and 21,215,504.70 is: 31,823,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,303,145.80 : 45,454,718.70 = 21,215,504.70 : x
  2. Step 2: Convert to fraction form
    30,303,145.80/45,454,718.70 = 21,215,504.70/x
  3. Step 3: Cross multiply
    30,303,145.80x = 45,454,718.70 × 21,215,504.70
  4. Step 4: Simplify right side
    30,303,145.80x = 964,344,798,217,027.88
  5. Step 5: Solve for x
    x = 964,344,798,217,027.88/30,303,145.80
  6. Step 6: Final answer
    x = 31,823,257.05

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1.5x scale

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.