Home / 21,309,381.20-29,399,750.26-12,135,528.56

Finding the Fourth Proportional to 21,309,381.20, 29,399,750.26 and 12,135,528.56

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Solution

The fourth proportional to 21,309,381.20, 29,399,750.26 and 12,135,528.56 is: 16,742,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,381.20 : 29,399,750.26 = 12,135,528.56 : x
  2. Step 2: Convert to fraction form
    21,309,381.20/29,399,750.26 = 12,135,528.56/x
  3. Step 3: Cross multiply
    21,309,381.20x = 29,399,750.26 × 12,135,528.56
  4. Step 4: Simplify right side
    21,309,381.20x = 356,781,508,937,097.44
  5. Step 5: Solve for x
    x = 356,781,508,937,097.44/21,309,381.20
  6. Step 6: Final answer
    x = 16,742,931.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.