Home / 28,731,210.16-39,649,912.66-15,679,311.78

Finding the Fourth Proportional to 28,731,210.16, 39,649,912.66 and 15,679,311.78

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Solution

The fourth proportional to 28,731,210.16, 39,649,912.66 and 15,679,311.78 is: 21,637,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,210.16 : 39,649,912.66 = 15,679,311.78 : x
  2. Step 2: Convert to fraction form
    28,731,210.16/39,649,912.66 = 15,679,311.78/x
  3. Step 3: Cross multiply
    28,731,210.16x = 39,649,912.66 × 15,679,311.78
  4. Step 4: Simplify right side
    28,731,210.16x = 621,683,342,645,909
  5. Step 5: Solve for x
    x = 621,683,342,645,909/28,731,210.16
  6. Step 6: Final answer
    x = 21,637,910.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.