Home / 12,302,904.70-18,454,357.05-5,128,451.20

Finding the Fourth Proportional to 12,302,904.70, 18,454,357.05 and 5,128,451.20

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Solution

The fourth proportional to 12,302,904.70, 18,454,357.05 and 5,128,451.20 is: 7,692,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302,904.70 : 18,454,357.05 = 5,128,451.20 : x
  2. Step 2: Convert to fraction form
    12,302,904.70/18,454,357.05 = 5,128,451.20/x
  3. Step 3: Cross multiply
    12,302,904.70x = 18,454,357.05 × 5,128,451.20
  4. Step 4: Simplify right side
    12,302,904.70x = 94,642,269,558,300.97
  5. Step 5: Solve for x
    x = 94,642,269,558,300.97/12,302,904.70
  6. Step 6: Final answer
    x = 7,692,676.80

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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.