Home / 18,971,990.35-28,453,726.34-8,727,010.72

Finding the Fourth Proportional to 18,971,990.35, 28,453,726.34 and 8,727,010.72

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Solution

The fourth proportional to 18,971,990.35, 28,453,726.34 and 8,727,010.72 is: 13,088,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971,990.35 : 28,453,726.34 = 8,727,010.72 : x
  2. Step 2: Convert to fraction form
    18,971,990.35/28,453,726.34 = 8,727,010.72/x
  3. Step 3: Cross multiply
    18,971,990.35x = 28,453,726.34 × 8,727,010.72
  4. Step 4: Simplify right side
    18,971,990.35x = 248,315,974,793,126.38
  5. Step 5: Solve for x
    x = 248,315,974,793,126.38/18,971,990.35
  6. Step 6: Final answer
    x = 13,088,556.88

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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.