Home / 18,715,516.30-28,071,200.85-15,343,842.70

Finding the Fourth Proportional to 18,715,516.30, 28,071,200.85 and 15,343,842.70

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Solution

The fourth proportional to 18,715,516.30, 28,071,200.85 and 15,343,842.70 is: 23,014,064.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,516.30 : 28,071,200.85 = 15,343,842.70 : x
  2. Step 2: Convert to fraction form
    18,715,516.30/28,071,200.85 = 15,343,842.70/x
  3. Step 3: Cross multiply
    18,715,516.30x = 28,071,200.85 × 15,343,842.70
  4. Step 4: Simplify right side
    18,715,516.30x = 430,720,090,242,506.31
  5. Step 5: Solve for x
    x = 430,720,090,242,506.31/18,715,516.30
  6. Step 6: Final answer
    x = 23,014,064.02

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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.