Home / 28,018,712.80-42,028,069.20-9,843,430.60

Finding the Fourth Proportional to 28,018,712.80, 42,028,069.20 and 9,843,430.60

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Solution

The fourth proportional to 28,018,712.80, 42,028,069.20 and 9,843,430.60 is: 14,765,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018,712.80 : 42,028,069.20 = 9,843,430.60 : x
  2. Step 2: Convert to fraction form
    28,018,712.80/42,028,069.20 = 9,843,430.60/x
  3. Step 3: Cross multiply
    28,018,712.80x = 42,028,069.20 × 9,843,430.60
  4. Step 4: Simplify right side
    28,018,712.80x = 413,700,382,422,197.56
  5. Step 5: Solve for x
    x = 413,700,382,422,197.56/28,018,712.80
  6. Step 6: Final answer
    x = 14,765,145.90

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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.