Home / 12,138,122.04-18,209,807.46-6,457,520.76

Finding the Fourth Proportional to 12,138,122.04, 18,209,807.46 and 6,457,520.76

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Solution

The fourth proportional to 12,138,122.04, 18,209,807.46 and 6,457,520.76 is: 9,687,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,122.04 : 18,209,807.46 = 6,457,520.76 : x
  2. Step 2: Convert to fraction form
    12,138,122.04/18,209,807.46 = 6,457,520.76/x
  3. Step 3: Cross multiply
    12,138,122.04x = 18,209,807.46 × 6,457,520.76
  4. Step 4: Simplify right side
    12,138,122.04x = 117,590,209,708,552.88
  5. Step 5: Solve for x
    x = 117,590,209,708,552.88/12,138,122.04
  6. Step 6: Final answer
    x = 9,687,677.33

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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.