Home / 20,856,808,797.76-28,782,941,640-11,341,917,036.64

Finding the Fourth Proportional to 20,856,808,797.76, 28,782,941,640 and 11,341,917,036.64

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Solution

The fourth proportional to 20,856,808,797.76, 28,782,941,640 and 11,341,917,036.64 is: 15,652,142,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856,808,797.76 : 28,782,941,640 = 11,341,917,036.64 : x
  2. Step 2: Convert to fraction form
    20,856,808,797.76/28,782,941,640 = 11,341,917,036.64/x
  3. Step 3: Cross multiply
    20,856,808,797.76x = 28,782,941,640 × 11,341,917,036.64
  4. Step 4: Simplify right side
    20,856,808,797.76x = 326,453,736,151,330,848,768
  5. Step 5: Solve for x
    x = 326,453,736,151,330,848,768/20,856,808,797.76
  6. Step 6: Final answer
    x = 15,652,142,152.56

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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.