Home / 20,859,943.80-31,289,915.70-18,338,446.20

Finding the Fourth Proportional to 20,859,943.80, 31,289,915.70 and 18,338,446.20

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Solution

The fourth proportional to 20,859,943.80, 31,289,915.70 and 18,338,446.20 is: 27,507,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859,943.80 : 31,289,915.70 = 18,338,446.20 : x
  2. Step 2: Convert to fraction form
    20,859,943.80/31,289,915.70 = 18,338,446.20/x
  3. Step 3: Cross multiply
    20,859,943.80x = 31,289,915.70 × 18,338,446.20
  4. Step 4: Simplify right side
    20,859,943.80x = 573,808,435,666,985.25
  5. Step 5: Solve for x
    x = 573,808,435,666,985.25/20,859,943.80
  6. Step 6: Final answer
    x = 27,507,669.30

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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.