Home / 21,032,928.80-31,527,620.40-11,428,013.60

Finding the Fourth Proportional to 21,032,928.80, 31,527,620.40 and 11,428,013.60

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Solution

The fourth proportional to 21,032,928.80, 31,527,620.40 and 11,428,013.60 is: 17,130,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032,928.80 : 31,527,620.40 = 11,428,013.60 : x
  2. Step 2: Convert to fraction form
    21,032,928.80/31,527,620.40 = 11,428,013.60/x
  3. Step 3: Cross multiply
    21,032,928.80x = 31,527,620.40 × 11,428,013.60
  4. Step 4: Simplify right side
    21,032,928.80x = 360,298,074,706,837.44
  5. Step 5: Solve for x
    x = 360,298,074,706,837.44/21,032,928.80
  6. Step 6: Final answer
    x = 17,130,190.39

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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.