Home / 13,327,881.60-19,991,822.40-7,643,431.20

Finding the Fourth Proportional to 13,327,881.60, 19,991,822.40 and 7,643,431.20

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Solution

The fourth proportional to 13,327,881.60, 19,991,822.40 and 7,643,431.20 is: 11,465,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327,881.60 : 19,991,822.40 = 7,643,431.20 : x
  2. Step 2: Convert to fraction form
    13,327,881.60/19,991,822.40 = 7,643,431.20/x
  3. Step 3: Cross multiply
    13,327,881.60x = 19,991,822.40 × 7,643,431.20
  4. Step 4: Simplify right side
    13,327,881.60x = 152,806,119,077,018.88
  5. Step 5: Solve for x
    x = 152,806,119,077,018.88/13,327,881.60
  6. Step 6: Final answer
    x = 11,465,146.80

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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.