Home / 20,736,618.40-31,104,927.60-13,122,359.20

Finding the Fourth Proportional to 20,736,618.40, 31,104,927.60 and 13,122,359.20

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Solution

The fourth proportional to 20,736,618.40, 31,104,927.60 and 13,122,359.20 is: 19,683,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,618.40 : 31,104,927.60 = 13,122,359.20 : x
  2. Step 2: Convert to fraction form
    20,736,618.40/31,104,927.60 = 13,122,359.20/x
  3. Step 3: Cross multiply
    20,736,618.40x = 31,104,927.60 × 13,122,359.20
  4. Step 4: Simplify right side
    20,736,618.40x = 408,170,032,857,193.94
  5. Step 5: Solve for x
    x = 408,170,032,857,193.94/20,736,618.40
  6. Step 6: Final answer
    x = 19,683,538.80

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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.