Home / 21,906,715.21-30,229,238.20-12,116,948.70

Finding the Fourth Proportional to 21,906,715.21, 30,229,238.20 and 12,116,948.70

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Solution

The fourth proportional to 21,906,715.21, 30,229,238.20 and 12,116,948.70 is: 16,720,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906,715.21 : 30,229,238.20 = 12,116,948.70 : x
  2. Step 2: Convert to fraction form
    21,906,715.21/30,229,238.20 = 12,116,948.70/x
  3. Step 3: Cross multiply
    21,906,715.21x = 30,229,238.20 × 12,116,948.70
  4. Step 4: Simplify right side
    21,906,715.21x = 366,286,128,509,480.31
  5. Step 5: Solve for x
    x = 366,286,128,509,480.31/21,906,715.21
  6. Step 6: Final answer
    x = 16,720,267.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.