Home / 21,142,216,991.40-29,177,026,568.28-12,111,720,413.76

Finding the Fourth Proportional to 21,142,216,991.40, 29,177,026,568.28 and 12,111,720,413.76

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Solution

The fourth proportional to 21,142,216,991.40, 29,177,026,568.28 and 12,111,720,413.76 is: 16,714,613,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142,216,991.40 : 29,177,026,568.28 = 12,111,720,413.76 : x
  2. Step 2: Convert to fraction form
    21,142,216,991.40/29,177,026,568.28 = 12,111,720,413.76/x
  3. Step 3: Cross multiply
    21,142,216,991.40x = 29,177,026,568.28 × 12,111,720,413.76
  4. Step 4: Simplify right side
    21,142,216,991.40x = 353,383,988,299,854,774,272
  5. Step 5: Solve for x
    x = 353,383,988,299,854,774,272/21,142,216,991.40
  6. Step 6: Final answer
    x = 16,714,613,630.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.