Home / 20,857,533.60-31,286,300.40-11,899,581.60

Finding the Fourth Proportional to 20,857,533.60, 31,286,300.40 and 11,899,581.60

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Solution

The fourth proportional to 20,857,533.60, 31,286,300.40 and 11,899,581.60 is: 17,849,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857,533.60 : 31,286,300.40 = 11,899,581.60 : x
  2. Step 2: Convert to fraction form
    20,857,533.60/31,286,300.40 = 11,899,581.60/x
  3. Step 3: Cross multiply
    20,857,533.60x = 31,286,300.40 × 11,899,581.60
  4. Step 4: Simplify right side
    20,857,533.60x = 372,293,884,571,912.62
  5. Step 5: Solve for x
    x = 372,293,884,571,912.62/20,857,533.60
  6. Step 6: Final answer
    x = 17,849,372.40

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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.