Home / 10,507,212.20-15,772,628.10-8,121,632.60

Finding the Fourth Proportional to 10,507,212.20, 15,772,628.10 and 8,121,632.60

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Solution

The fourth proportional to 10,507,212.20, 15,772,628.10 and 8,121,632.60 is: 12,191,577.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,507,212.20 : 15,772,628.10 = 8,121,632.60 : x
  2. Step 2: Convert to fraction form
    10,507,212.20/15,772,628.10 = 8,121,632.60/x
  3. Step 3: Cross multiply
    10,507,212.20x = 15,772,628.10 × 8,121,632.60
  4. Step 4: Simplify right side
    10,507,212.20x = 128,099,490,564,636.05
  5. Step 5: Solve for x
    x = 128,099,490,564,636.05/10,507,212.20
  6. Step 6: Final answer
    x = 12,191,577.38

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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.