Home / 13,190,681.52-19,784,039.40-7,728,284.52

Finding the Fourth Proportional to 13,190,681.52, 19,784,039.40 and 7,728,284.52

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Solution

The fourth proportional to 13,190,681.52, 19,784,039.40 and 7,728,284.52 is: 11,591,265.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190,681.52 : 19,784,039.40 = 7,728,284.52 : x
  2. Step 2: Convert to fraction form
    13,190,681.52/19,784,039.40 = 7,728,284.52/x
  3. Step 3: Cross multiply
    13,190,681.52x = 19,784,039.40 × 7,728,284.52
  4. Step 4: Simplify right side
    13,190,681.52x = 152,896,685,438,090.06
  5. Step 5: Solve for x
    x = 152,896,685,438,090.06/13,190,681.52
  6. Step 6: Final answer
    x = 11,591,265.03

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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.