Home / 20,340,788.56-28,070,515.64-11,970,009.05

Finding the Fourth Proportional to 20,340,788.56, 28,070,515.64 and 11,970,009.05

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Solution

The fourth proportional to 20,340,788.56, 28,070,515.64 and 11,970,009.05 is: 16,518,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340,788.56 : 28,070,515.64 = 11,970,009.05 : x
  2. Step 2: Convert to fraction form
    20,340,788.56/28,070,515.64 = 11,970,009.05/x
  3. Step 3: Cross multiply
    20,340,788.56x = 28,070,515.64 × 11,970,009.05
  4. Step 4: Simplify right side
    20,340,788.56x = 336,004,326,155,445.88
  5. Step 5: Solve for x
    x = 336,004,326,155,445.88/20,340,788.56
  6. Step 6: Final answer
    x = 16,518,746.32

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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.