Home / 18,715,515.80-28,071,200.10-15,343,842.20

Finding the Fourth Proportional to 18,715,515.80, 28,071,200.10 and 15,343,842.20

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Solution

The fourth proportional to 18,715,515.80, 28,071,200.10 and 15,343,842.20 is: 23,014,063.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,515.80 : 28,071,200.10 = 15,343,842.20 : x
  2. Step 2: Convert to fraction form
    18,715,515.80/28,071,200.10 = 15,343,842.20/x
  3. Step 3: Cross multiply
    18,715,515.80x = 28,071,200.10 × 15,343,842.20
  4. Step 4: Simplify right side
    18,715,515.80x = 430,720,064,699,024.25
  5. Step 5: Solve for x
    x = 430,720,064,699,024.25/18,715,515.80
  6. Step 6: Final answer
    x = 23,014,063.27

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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.