Home / 28,512,139.20-42,752,462.40-11,453,539.20

Finding the Fourth Proportional to 28,512,139.20, 42,752,462.40 and 11,453,539.20

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Solution

The fourth proportional to 28,512,139.20, 42,752,462.40 and 11,453,539.20 is: 17,173,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,139.20 : 42,752,462.40 = 11,453,539.20 : x
  2. Step 2: Convert to fraction form
    28,512,139.20/42,752,462.40 = 11,453,539.20/x
  3. Step 3: Cross multiply
    28,512,139.20x = 42,752,462.40 × 11,453,539.20
  4. Step 4: Simplify right side
    28,512,139.20x = 489,667,003,994,926
  5. Step 5: Solve for x
    x = 489,667,003,994,926/28,512,139.20
  6. Step 6: Final answer
    x = 17,173,983.35

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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.