Home / 20,720,037.60-31,080,056.40-18,704,498.40

Finding the Fourth Proportional to 20,720,037.60, 31,080,056.40 and 18,704,498.40

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Solution

The fourth proportional to 20,720,037.60, 31,080,056.40 and 18,704,498.40 is: 28,056,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720,037.60 : 31,080,056.40 = 18,704,498.40 : x
  2. Step 2: Convert to fraction form
    20,720,037.60/31,080,056.40 = 18,704,498.40/x
  3. Step 3: Cross multiply
    20,720,037.60x = 31,080,056.40 × 18,704,498.40
  4. Step 4: Simplify right side
    20,720,037.60x = 581,336,865,205,709.62
  5. Step 5: Solve for x
    x = 581,336,865,205,709.62/20,720,037.60
  6. Step 6: Final answer
    x = 28,056,747.60

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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.