Home / 20,653,813.80-30,980,720.70-18,598,908.60

Finding the Fourth Proportional to 20,653,813.80, 30,980,720.70 and 18,598,908.60

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Solution

The fourth proportional to 20,653,813.80, 30,980,720.70 and 18,598,908.60 is: 27,898,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653,813.80 : 30,980,720.70 = 18,598,908.60 : x
  2. Step 2: Convert to fraction form
    20,653,813.80/30,980,720.70 = 18,598,908.60/x
  3. Step 3: Cross multiply
    20,653,813.80x = 30,980,720.70 × 18,598,908.60
  4. Step 4: Simplify right side
    20,653,813.80x = 576,207,592,661,428
  5. Step 5: Solve for x
    x = 576,207,592,661,428/20,653,813.80
  6. Step 6: Final answer
    x = 27,898,362.90

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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.