Home / 20,754,485.60-31,131,728.40-19,578,754.40

Finding the Fourth Proportional to 20,754,485.60, 31,131,728.40 and 19,578,754.40

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Solution

The fourth proportional to 20,754,485.60, 31,131,728.40 and 19,578,754.40 is: 29,368,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,485.60 : 31,131,728.40 = 19,578,754.40 : x
  2. Step 2: Convert to fraction form
    20,754,485.60/31,131,728.40 = 19,578,754.40/x
  3. Step 3: Cross multiply
    20,754,485.60x = 31,131,728.40 × 19,578,754.40
  4. Step 4: Simplify right side
    20,754,485.60x = 609,520,464,391,104.88
  5. Step 5: Solve for x
    x = 609,520,464,391,104.88/20,754,485.60
  6. Step 6: Final answer
    x = 29,368,131.60

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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.