Home / 20,803,407.80-28,706,187.38-11,985,743.75

Finding the Fourth Proportional to 20,803,407.80, 28,706,187.38 and 11,985,743.75

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Solution

The fourth proportional to 20,803,407.80, 28,706,187.38 and 11,985,743.75 is: 16,538,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803,407.80 : 28,706,187.38 = 11,985,743.75 : x
  2. Step 2: Convert to fraction form
    20,803,407.80/28,706,187.38 = 11,985,743.75/x
  3. Step 3: Cross multiply
    20,803,407.80x = 28,706,187.38 × 11,985,743.75
  4. Step 4: Simplify right side
    20,803,407.80x = 344,065,005,772,704.19
  5. Step 5: Solve for x
    x = 344,065,005,772,704.19/20,803,407.80
  6. Step 6: Final answer
    x = 16,538,877.15

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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.