Home / 20,726,938.40-31,043,168.40-12,223,882.40

Finding the Fourth Proportional to 20,726,938.40, 31,043,168.40 and 12,223,882.40

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Solution

The fourth proportional to 20,726,938.40, 31,043,168.40 and 12,223,882.40 is: 18,307,963.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726,938.40 : 31,043,168.40 = 12,223,882.40 : x
  2. Step 2: Convert to fraction form
    20,726,938.40/31,043,168.40 = 12,223,882.40/x
  3. Step 3: Cross multiply
    20,726,938.40x = 31,043,168.40 × 12,223,882.40
  4. Step 4: Simplify right side
    20,726,938.40x = 379,468,039,844,996.12
  5. Step 5: Solve for x
    x = 379,468,039,844,996.12/20,726,938.40
  6. Step 6: Final answer
    x = 18,307,963.89

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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.