Home / 20,736,071.60-31,104,107.40-10,639,713.20

Finding the Fourth Proportional to 20,736,071.60, 31,104,107.40 and 10,639,713.20

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Solution

The fourth proportional to 20,736,071.60, 31,104,107.40 and 10,639,713.20 is: 15,959,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,071.60 : 31,104,107.40 = 10,639,713.20 : x
  2. Step 2: Convert to fraction form
    20,736,071.60/31,104,107.40 = 10,639,713.20/x
  3. Step 3: Cross multiply
    20,736,071.60x = 31,104,107.40 × 10,639,713.20
  4. Step 4: Simplify right side
    20,736,071.60x = 330,938,782,077,997.62
  5. Step 5: Solve for x
    x = 330,938,782,077,997.62/20,736,071.60
  6. Step 6: Final answer
    x = 15,959,569.80

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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.