Home / 28,543,145.20-42,821,255.40-12,371,810.80

Finding the Fourth Proportional to 28,543,145.20, 42,821,255.40 and 12,371,810.80

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Solution

The fourth proportional to 28,543,145.20, 42,821,255.40 and 12,371,810.80 is: 18,560,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543,145.20 : 42,821,255.40 = 12,371,810.80 : x
  2. Step 2: Convert to fraction form
    28,543,145.20/42,821,255.40 = 12,371,810.80/x
  3. Step 3: Cross multiply
    28,543,145.20x = 42,821,255.40 × 12,371,810.80
  4. Step 4: Simplify right side
    28,543,145.20x = 529,776,470,027,278.31
  5. Step 5: Solve for x
    x = 529,776,470,027,278.31/28,543,145.20
  6. Step 6: Final answer
    x = 18,560,549.87

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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.