Home / 21,173,885,999.70-31,760,828,999.55-18,888,264,546.90

Finding the Fourth Proportional to 21,173,885,999.70, 31,760,828,999.55 and 18,888,264,546.90

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Solution

The fourth proportional to 21,173,885,999.70, 31,760,828,999.55 and 18,888,264,546.90 is: 28,332,396,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173,885,999.70 : 31,760,828,999.55 = 18,888,264,546.90 : x
  2. Step 2: Convert to fraction form
    21,173,885,999.70/31,760,828,999.55 = 18,888,264,546.90/x
  3. Step 3: Cross multiply
    21,173,885,999.70x = 31,760,828,999.55 × 18,888,264,546.90
  4. Step 4: Simplify right side
    21,173,885,999.70x = 599,906,940,372,353,679,360
  5. Step 5: Solve for x
    x = 599,906,940,372,353,679,360/21,173,885,999.70
  6. Step 6: Final answer
    x = 28,332,396,820.35

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1.5x scale

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.