Home / 18,720,037.70-28,080,056.55-15,696,728.90

Finding the Fourth Proportional to 18,720,037.70, 28,080,056.55 and 15,696,728.90

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Solution

The fourth proportional to 18,720,037.70, 28,080,056.55 and 15,696,728.90 is: 23,545,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,037.70 : 28,080,056.55 = 15,696,728.90 : x
  2. Step 2: Convert to fraction form
    18,720,037.70/28,080,056.55 = 15,696,728.90/x
  3. Step 3: Cross multiply
    18,720,037.70x = 28,080,056.55 × 15,696,728.90
  4. Step 4: Simplify right side
    18,720,037.70x = 440,765,035,162,019.31
  5. Step 5: Solve for x
    x = 440,765,035,162,019.31/18,720,037.70
  6. Step 6: Final answer
    x = 23,545,093.35

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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.