Home / 20,949,168.16-28,909,573.68-11,781,810.64

Finding the Fourth Proportional to 20,949,168.16, 28,909,573.68 and 11,781,810.64

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Solution

The fourth proportional to 20,949,168.16, 28,909,573.68 and 11,781,810.64 is: 16,258,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949,168.16 : 28,909,573.68 = 11,781,810.64 : x
  2. Step 2: Convert to fraction form
    20,949,168.16/28,909,573.68 = 11,781,810.64/x
  3. Step 3: Cross multiply
    20,949,168.16x = 28,909,573.68 × 11,781,810.64
  4. Step 4: Simplify right side
    20,949,168.16x = 340,607,122,780,888
  5. Step 5: Solve for x
    x = 340,607,122,780,888/20,949,168.16
  6. Step 6: Final answer
    x = 16,258,742.12

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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.