Home / 21,167,390.60-31,769,748.30-18,144,081.80

Finding the Fourth Proportional to 21,167,390.60, 31,769,748.30 and 18,144,081.80

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Solution

The fourth proportional to 21,167,390.60, 31,769,748.30 and 18,144,081.80 is: 27,232,119.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167,390.60 : 31,769,748.30 = 18,144,081.80 : x
  2. Step 2: Convert to fraction form
    21,167,390.60/31,769,748.30 = 18,144,081.80/x
  3. Step 3: Cross multiply
    21,167,390.60x = 31,769,748.30 × 18,144,081.80
  4. Step 4: Simplify right side
    21,167,390.60x = 576,432,911,920,611
  5. Step 5: Solve for x
    x = 576,432,911,920,611/21,167,390.60
  6. Step 6: Final answer
    x = 27,232,119.58

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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.