Home / 20,780,384.80-31,171,111.80-9,848,009.20

Finding the Fourth Proportional to 20,780,384.80, 31,171,111.80 and 9,848,009.20

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Solution

The fourth proportional to 20,780,384.80, 31,171,111.80 and 9,848,009.20 is: 14,772,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,384.80 : 31,171,111.80 = 9,848,009.20 : x
  2. Step 2: Convert to fraction form
    20,780,384.80/31,171,111.80 = 9,848,009.20/x
  3. Step 3: Cross multiply
    20,780,384.80x = 31,171,111.80 × 9,848,009.20
  4. Step 4: Simplify right side
    20,780,384.80x = 306,973,395,780,628.56
  5. Step 5: Solve for x
    x = 306,973,395,780,628.56/20,780,384.80
  6. Step 6: Final answer
    x = 14,772,267.15

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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.