Home / 20,686,959.72-28,546,897.50-11,865,962.52

Finding the Fourth Proportional to 20,686,959.72, 28,546,897.50 and 11,865,962.52

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Solution

The fourth proportional to 20,686,959.72, 28,546,897.50 and 11,865,962.52 is: 16,374,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,959.72 : 28,546,897.50 = 11,865,962.52 : x
  2. Step 2: Convert to fraction form
    20,686,959.72/28,546,897.50 = 11,865,962.52/x
  3. Step 3: Cross multiply
    20,686,959.72x = 28,546,897.50 × 11,865,962.52
  4. Step 4: Simplify right side
    20,686,959.72x = 338,736,415,797,281.69
  5. Step 5: Solve for x
    x = 338,736,415,797,281.69/20,686,959.72
  6. Step 6: Final answer
    x = 16,374,393.36

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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.