Home / 12,115,276.20-18,155,199.60-10,308,376.80

Finding the Fourth Proportional to 12,115,276.20, 18,155,199.60 and 10,308,376.80

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Solution

The fourth proportional to 12,115,276.20, 18,155,199.60 and 10,308,376.80 is: 15,447,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,276.20 : 18,155,199.60 = 10,308,376.80 : x
  2. Step 2: Convert to fraction form
    12,115,276.20/18,155,199.60 = 10,308,376.80/x
  3. Step 3: Cross multiply
    12,115,276.20x = 18,155,199.60 × 10,308,376.80
  4. Step 4: Simplify right side
    12,115,276.20x = 187,150,638,356,009.31
  5. Step 5: Solve for x
    x = 187,150,638,356,009.31/12,115,276.20
  6. Step 6: Final answer
    x = 15,447,492.51

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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.