Home / 12,457,892.10-18,686,838.15-7,649,991.30

Finding the Fourth Proportional to 12,457,892.10, 18,686,838.15 and 7,649,991.30

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Solution

The fourth proportional to 12,457,892.10, 18,686,838.15 and 7,649,991.30 is: 11,474,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,892.10 : 18,686,838.15 = 7,649,991.30 : x
  2. Step 2: Convert to fraction form
    12,457,892.10/18,686,838.15 = 7,649,991.30/x
  3. Step 3: Cross multiply
    12,457,892.10x = 18,686,838.15 × 7,649,991.30
  4. Step 4: Simplify right side
    12,457,892.10x = 142,954,149,272,008.09
  5. Step 5: Solve for x
    x = 142,954,149,272,008.09/12,457,892.10
  6. Step 6: Final answer
    x = 11,474,986.95

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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.