Home / 20,736,101.60-31,104,152.40-18,720,562.40

Finding the Fourth Proportional to 20,736,101.60, 31,104,152.40 and 18,720,562.40

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Solution

The fourth proportional to 20,736,101.60, 31,104,152.40 and 18,720,562.40 is: 28,080,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,101.60 : 31,104,152.40 = 18,720,562.40 : x
  2. Step 2: Convert to fraction form
    20,736,101.60/31,104,152.40 = 18,720,562.40/x
  3. Step 3: Cross multiply
    20,736,101.60x = 31,104,152.40 × 18,720,562.40
  4. Step 4: Simplify right side
    20,736,101.60x = 582,287,225,903,309.62
  5. Step 5: Solve for x
    x = 582,287,225,903,309.62/20,736,101.60
  6. Step 6: Final answer
    x = 28,080,843.60

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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.