Home / 28,132,640.70-42,197,094.81-12,776,284.86

Finding the Fourth Proportional to 28,132,640.70, 42,197,094.81 and 12,776,284.86

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Solution

The fourth proportional to 28,132,640.70, 42,197,094.81 and 12,776,284.86 is: 19,163,579.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132,640.70 : 42,197,094.81 = 12,776,284.86 : x
  2. Step 2: Convert to fraction form
    28,132,640.70/42,197,094.81 = 12,776,284.86/x
  3. Step 3: Cross multiply
    28,132,640.70x = 42,197,094.81 × 12,776,284.86
  4. Step 4: Simplify right side
    28,132,640.70x = 539,122,103,556,987.56
  5. Step 5: Solve for x
    x = 539,122,103,556,987.56/28,132,640.70
  6. Step 6: Final answer
    x = 19,163,579.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.