Home / 28,416,419.96-39,211,731.20-20,978,038.15

Finding the Fourth Proportional to 28,416,419.96, 39,211,731.20 and 20,978,038.15

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Solution

The fourth proportional to 28,416,419.96, 39,211,731.20 and 20,978,038.15 is: 28,947,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416,419.96 : 39,211,731.20 = 20,978,038.15 : x
  2. Step 2: Convert to fraction form
    28,416,419.96/39,211,731.20 = 20,978,038.15/x
  3. Step 3: Cross multiply
    28,416,419.96x = 39,211,731.20 × 20,978,038.15
  4. Step 4: Simplify right side
    28,416,419.96x = 822,585,192,995,561.12
  5. Step 5: Solve for x
    x = 822,585,192,995,561.12/28,416,419.96
  6. Step 6: Final answer
    x = 28,947,530.84

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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.