Home / 18,686,912.40-28,030,368.60-11,475,061.20

Finding the Fourth Proportional to 18,686,912.40, 28,030,368.60 and 11,475,061.20

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Solution

The fourth proportional to 18,686,912.40, 28,030,368.60 and 11,475,061.20 is: 17,212,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,912.40 : 28,030,368.60 = 11,475,061.20 : x
  2. Step 2: Convert to fraction form
    18,686,912.40/28,030,368.60 = 11,475,061.20/x
  3. Step 3: Cross multiply
    18,686,912.40x = 28,030,368.60 × 11,475,061.20
  4. Step 4: Simplify right side
    18,686,912.40x = 321,650,195,143,558.31
  5. Step 5: Solve for x
    x = 321,650,195,143,558.31/18,686,912.40
  6. Step 6: Final answer
    x = 17,212,591.80

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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.