Home / 20,879,932.71-28,814,962.40-12,059,220.12

Finding the Fourth Proportional to 20,879,932.71, 28,814,962.40 and 12,059,220.12

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Solution

The fourth proportional to 20,879,932.71, 28,814,962.40 and 12,059,220.12 is: 16,642,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879,932.71 : 28,814,962.40 = 12,059,220.12 : x
  2. Step 2: Convert to fraction form
    20,879,932.71/28,814,962.40 = 12,059,220.12/x
  3. Step 3: Cross multiply
    20,879,932.71x = 28,814,962.40 × 12,059,220.12
  4. Step 4: Simplify right side
    20,879,932.71x = 347,485,974,270,827.38
  5. Step 5: Solve for x
    x = 347,485,974,270,827.38/20,879,932.71
  6. Step 6: Final answer
    x = 16,642,102.21

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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.