Home / 12,517,451.81-18,778,875.14-3,881,378.57

Finding the Fourth Proportional to 12,517,451.81, 18,778,875.14 and 3,881,378.57

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Solution

The fourth proportional to 12,517,451.81, 18,778,875.14 and 3,881,378.57 is: 5,822,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517,451.81 : 18,778,875.14 = 3,881,378.57 : x
  2. Step 2: Convert to fraction form
    12,517,451.81/18,778,875.14 = 3,881,378.57/x
  3. Step 3: Cross multiply
    12,517,451.81x = 18,778,875.14 × 3,881,378.57
  4. Step 4: Simplify right side
    12,517,451.81x = 72,887,923,437,800.44
  5. Step 5: Solve for x
    x = 72,887,923,437,800.44/12,517,451.81
  6. Step 6: Final answer
    x = 5,822,904.26

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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.