Home / 12,478,652.70-18,720,603.45-7,082,886.30

Finding the Fourth Proportional to 12,478,652.70, 18,720,603.45 and 7,082,886.30

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Solution

The fourth proportional to 12,478,652.70, 18,720,603.45 and 7,082,886.30 is: 10,625,819.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,652.70 : 18,720,603.45 = 7,082,886.30 : x
  2. Step 2: Convert to fraction form
    12,478,652.70/18,720,603.45 = 7,082,886.30/x
  3. Step 3: Cross multiply
    12,478,652.70x = 18,720,603.45 × 7,082,886.30
  4. Step 4: Simplify right side
    12,478,652.70x = 132,595,905,703,737.72
  5. Step 5: Solve for x
    x = 132,595,905,703,737.72/12,478,652.70
  6. Step 6: Final answer
    x = 10,625,819.06

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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.