Home / 21,142,216,986.90-29,177,026,562.07-12,111,720,409.26

Finding the Fourth Proportional to 21,142,216,986.90, 29,177,026,562.07 and 12,111,720,409.26

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Solution

The fourth proportional to 21,142,216,986.90, 29,177,026,562.07 and 12,111,720,409.26 is: 16,714,613,624.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142,216,986.90 : 29,177,026,562.07 = 12,111,720,409.26 : x
  2. Step 2: Convert to fraction form
    21,142,216,986.90/29,177,026,562.07 = 12,111,720,409.26/x
  3. Step 3: Cross multiply
    21,142,216,986.90x = 29,177,026,562.07 × 12,111,720,409.26
  4. Step 4: Simplify right side
    21,142,216,986.90x = 353,383,988,093,344,350,208
  5. Step 5: Solve for x
    x = 353,383,988,093,344,350,208/21,142,216,986.90
  6. Step 6: Final answer
    x = 16,714,613,624.12

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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.