Home / 20,763,729.30-31,145,593.95-9,978,429.45

Finding the Fourth Proportional to 20,763,729.30, 31,145,593.95 and 9,978,429.45

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Solution

The fourth proportional to 20,763,729.30, 31,145,593.95 and 9,978,429.45 is: 14,967,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763,729.30 : 31,145,593.95 = 9,978,429.45 : x
  2. Step 2: Convert to fraction form
    20,763,729.30/31,145,593.95 = 9,978,429.45/x
  3. Step 3: Cross multiply
    20,763,729.30x = 31,145,593.95 × 9,978,429.45
  4. Step 4: Simplify right side
    20,763,729.30x = 310,784,111,908,421.81
  5. Step 5: Solve for x
    x = 310,784,111,908,421.81/20,763,729.30
  6. Step 6: Final answer
    x = 14,967,644.18

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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.