Home / 13,327,869.60-19,991,804.40-7,643,419.20

Finding the Fourth Proportional to 13,327,869.60, 19,991,804.40 and 7,643,419.20

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Solution

The fourth proportional to 13,327,869.60, 19,991,804.40 and 7,643,419.20 is: 11,465,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327,869.60 : 19,991,804.40 = 7,643,419.20 : x
  2. Step 2: Convert to fraction form
    13,327,869.60/19,991,804.40 = 7,643,419.20/x
  3. Step 3: Cross multiply
    13,327,869.60x = 19,991,804.40 × 7,643,419.20
  4. Step 4: Simplify right side
    13,327,869.60x = 152,805,741,593,604.47
  5. Step 5: Solve for x
    x = 152,805,741,593,604.47/13,327,869.60
  6. Step 6: Final answer
    x = 11,465,128.80

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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.