Home / 18,960,618.40-28,392,813.60-10,431,318.40

Finding the Fourth Proportional to 18,960,618.40, 28,392,813.60 and 10,431,318.40

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Solution

The fourth proportional to 18,960,618.40, 28,392,813.60 and 10,431,318.40 is: 15,620,507.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960,618.40 : 28,392,813.60 = 10,431,318.40 : x
  2. Step 2: Convert to fraction form
    18,960,618.40/28,392,813.60 = 10,431,318.40/x
  3. Step 3: Cross multiply
    18,960,618.40x = 28,392,813.60 × 10,431,318.40
  4. Step 4: Simplify right side
    18,960,618.40x = 296,174,478,933,450.25
  5. Step 5: Solve for x
    x = 296,174,478,933,450.25/18,960,618.40
  6. Step 6: Final answer
    x = 15,620,507.34

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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.