Home / 20,321,955.79-28,044,326.06-11,029,525.86

Finding the Fourth Proportional to 20,321,955.79, 28,044,326.06 and 11,029,525.86

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Solution

The fourth proportional to 20,321,955.79, 28,044,326.06 and 11,029,525.86 is: 15,220,760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,955.79 : 28,044,326.06 = 11,029,525.86 : x
  2. Step 2: Convert to fraction form
    20,321,955.79/28,044,326.06 = 11,029,525.86/x
  3. Step 3: Cross multiply
    20,321,955.79x = 28,044,326.06 × 11,029,525.86
  4. Step 4: Simplify right side
    20,321,955.79x = 309,315,619,449,894.25
  5. Step 5: Solve for x
    x = 309,315,619,449,894.25/20,321,955.79
  6. Step 6: Final answer
    x = 15,220,760.38

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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.