Home / 20,679,969.80-31,019,954.70-11,610,043.40

Finding the Fourth Proportional to 20,679,969.80, 31,019,954.70 and 11,610,043.40

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Solution

The fourth proportional to 20,679,969.80, 31,019,954.70 and 11,610,043.40 is: 17,415,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679,969.80 : 31,019,954.70 = 11,610,043.40 : x
  2. Step 2: Convert to fraction form
    20,679,969.80/31,019,954.70 = 11,610,043.40/x
  3. Step 3: Cross multiply
    20,679,969.80x = 31,019,954.70 × 11,610,043.40
  4. Step 4: Simplify right side
    20,679,969.80x = 360,143,020,333,034
  5. Step 5: Solve for x
    x = 360,143,020,333,034/20,679,969.80
  6. Step 6: Final answer
    x = 17,415,065.10

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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.