Home / 20,745,124.80-31,117,687.20-15,706,276.80

Finding the Fourth Proportional to 20,745,124.80, 31,117,687.20 and 15,706,276.80

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Solution

The fourth proportional to 20,745,124.80, 31,117,687.20 and 15,706,276.80 is: 23,559,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745,124.80 : 31,117,687.20 = 15,706,276.80 : x
  2. Step 2: Convert to fraction form
    20,745,124.80/31,117,687.20 = 15,706,276.80/x
  3. Step 3: Cross multiply
    20,745,124.80x = 31,117,687.20 × 15,706,276.80
  4. Step 4: Simplify right side
    20,745,124.80x = 488,743,008,539,017
  5. Step 5: Solve for x
    x = 488,743,008,539,017/20,745,124.80
  6. Step 6: Final answer
    x = 23,559,415.20

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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.