Home / 21,167,378.60-31,769,730.30-18,144,069.80

Finding the Fourth Proportional to 21,167,378.60, 31,769,730.30 and 18,144,069.80

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Solution

The fourth proportional to 21,167,378.60, 31,769,730.30 and 18,144,069.80 is: 27,232,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167,378.60 : 31,769,730.30 = 18,144,069.80 : x
  2. Step 2: Convert to fraction form
    21,167,378.60/31,769,730.30 = 18,144,069.80/x
  3. Step 3: Cross multiply
    21,167,378.60x = 31,769,730.30 × 18,144,069.80
  4. Step 4: Simplify right side
    21,167,378.60x = 576,432,204,090,375
  5. Step 5: Solve for x
    x = 576,432,204,090,375/21,167,378.60
  6. Step 6: Final answer
    x = 27,232,101.57

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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.