Home / 20,387,851,437.88-28,136,649,043.74-12,359,530,371.16

Finding the Fourth Proportional to 20,387,851,437.88, 28,136,649,043.74 and 12,359,530,371.16

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Solution

The fourth proportional to 20,387,851,437.88, 28,136,649,043.74 and 12,359,530,371.16 is: 17,057,009,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,851,437.88 : 28,136,649,043.74 = 12,359,530,371.16 : x
  2. Step 2: Convert to fraction form
    20,387,851,437.88/28,136,649,043.74 = 12,359,530,371.16/x
  3. Step 3: Cross multiply
    20,387,851,437.88x = 28,136,649,043.74 × 12,359,530,371.16
  4. Step 4: Simplify right side
    20,387,851,437.88x = 347,755,768,398,774,534,144
  5. Step 5: Solve for x
    x = 347,755,768,398,774,534,144/20,387,851,437.88
  6. Step 6: Final answer
    x = 17,057,009,143.82

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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.