Home / 20,989,930,833.30-31,496,989,485.15-7,913,112,503.70

Finding the Fourth Proportional to 20,989,930,833.30, 31,496,989,485.15 and 7,913,112,503.70

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Solution

The fourth proportional to 20,989,930,833.30, 31,496,989,485.15 and 7,913,112,503.70 is: 11,874,227,852.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989,930,833.30 : 31,496,989,485.15 = 7,913,112,503.70 : x
  2. Step 2: Convert to fraction form
    20,989,930,833.30/31,496,989,485.15 = 7,913,112,503.70/x
  3. Step 3: Cross multiply
    20,989,930,833.30x = 31,496,989,485.15 × 7,913,112,503.70
  4. Step 4: Simplify right side
    20,989,930,833.30x = 249,239,221,323,847,892,992
  5. Step 5: Solve for x
    x = 249,239,221,323,847,892,992/20,989,930,833.30
  6. Step 6: Final answer
    x = 11,874,227,852.55

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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.