Home / 20,736,141.60-31,104,212.40-13,140,544.80

Finding the Fourth Proportional to 20,736,141.60, 31,104,212.40 and 13,140,544.80

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Solution

The fourth proportional to 20,736,141.60, 31,104,212.40 and 13,140,544.80 is: 19,710,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,141.60 : 31,104,212.40 = 13,140,544.80 : x
  2. Step 2: Convert to fraction form
    20,736,141.60/31,104,212.40 = 13,140,544.80/x
  3. Step 3: Cross multiply
    20,736,141.60x = 31,104,212.40 × 13,140,544.80
  4. Step 4: Simplify right side
    20,736,141.60x = 408,726,296,510,915.50
  5. Step 5: Solve for x
    x = 408,726,296,510,915.50/20,736,141.60
  6. Step 6: Final answer
    x = 19,710,817.20

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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.