Home / 20,824,135.72-28,736,947-11,531,521.60

Finding the Fourth Proportional to 20,824,135.72, 28,736,947 and 11,531,521.60

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Solution

The fourth proportional to 20,824,135.72, 28,736,947 and 11,531,521.60 is: 15,913,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824,135.72 : 28,736,947 = 11,531,521.60 : x
  2. Step 2: Convert to fraction form
    20,824,135.72/28,736,947 = 11,531,521.60/x
  3. Step 3: Cross multiply
    20,824,135.72x = 28,736,947 × 11,531,521.60
  4. Step 4: Simplify right side
    20,824,135.72x = 331,380,725,048,555.19
  5. Step 5: Solve for x
    x = 331,380,725,048,555.19/20,824,135.72
  6. Step 6: Final answer
    x = 15,913,300.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.