Home / 20,686,546.40-31,047,534.30-9,189,706.10

Finding the Fourth Proportional to 20,686,546.40, 31,047,534.30 and 9,189,706.10

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Solution

The fourth proportional to 20,686,546.40, 31,047,534.30 and 9,189,706.10 is: 13,792,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,546.40 : 31,047,534.30 = 9,189,706.10 : x
  2. Step 2: Convert to fraction form
    20,686,546.40/31,047,534.30 = 9,189,706.10/x
  3. Step 3: Cross multiply
    20,686,546.40x = 31,047,534.30 × 9,189,706.10
  4. Step 4: Simplify right side
    20,686,546.40x = 285,317,715,346,669.25
  5. Step 5: Solve for x
    x = 285,317,715,346,669.25/20,686,546.40
  6. Step 6: Final answer
    x = 13,792,428.66

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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.