Home / 12,985,813.20-19,485,718.20-5,413,544.40

Finding the Fourth Proportional to 12,985,813.20, 19,485,718.20 and 5,413,544.40

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Solution

The fourth proportional to 12,985,813.20, 19,485,718.20 and 5,413,544.40 is: 8,123,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,813.20 : 19,485,718.20 = 5,413,544.40 : x
  2. Step 2: Convert to fraction form
    12,985,813.20/19,485,718.20 = 5,413,544.40/x
  3. Step 3: Cross multiply
    12,985,813.20x = 19,485,718.20 × 5,413,544.40
  4. Step 4: Simplify right side
    12,985,813.20x = 105,486,800,641,588.08
  5. Step 5: Solve for x
    x = 105,486,800,641,588.08/12,985,813.20
  6. Step 6: Final answer
    x = 8,123,234.10

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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.