Home / 15,148,855.40-20,905,443.78-8,622,484.72

Finding the Fourth Proportional to 15,148,855.40, 20,905,443.78 and 8,622,484.72

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Solution

The fourth proportional to 15,148,855.40, 20,905,443.78 and 8,622,484.72 is: 11,899,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148,855.40 : 20,905,443.78 = 8,622,484.72 : x
  2. Step 2: Convert to fraction form
    15,148,855.40/20,905,443.78 = 8,622,484.72/x
  3. Step 3: Cross multiply
    15,148,855.40x = 20,905,443.78 × 8,622,484.72
  4. Step 4: Simplify right side
    15,148,855.40x = 180,256,869,557,869.06
  5. Step 5: Solve for x
    x = 180,256,869,557,869.06/15,148,855.40
  6. Step 6: Final answer
    x = 11,899,042.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.