Home / 20,221,381.60-30,332,072.40-13,418,936.80

Finding the Fourth Proportional to 20,221,381.60, 30,332,072.40 and 13,418,936.80

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Solution

The fourth proportional to 20,221,381.60, 30,332,072.40 and 13,418,936.80 is: 20,128,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,381.60 : 30,332,072.40 = 13,418,936.80 : x
  2. Step 2: Convert to fraction form
    20,221,381.60/30,332,072.40 = 13,418,936.80/x
  3. Step 3: Cross multiply
    20,221,381.60x = 30,332,072.40 × 13,418,936.80
  4. Step 4: Simplify right side
    20,221,381.60x = 407,024,162,548,624.31
  5. Step 5: Solve for x
    x = 407,024,162,548,624.31/20,221,381.60
  6. Step 6: Final answer
    x = 20,128,405.20

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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.