Home / 12,308,078.30-18,435,545.40-8,003,406.20

Finding the Fourth Proportional to 12,308,078.30, 18,435,545.40 and 8,003,406.20

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Solution

The fourth proportional to 12,308,078.30, 18,435,545.40 and 8,003,406.20 is: 11,987,830.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308,078.30 : 18,435,545.40 = 8,003,406.20 : x
  2. Step 2: Convert to fraction form
    12,308,078.30/18,435,545.40 = 8,003,406.20/x
  3. Step 3: Cross multiply
    12,308,078.30x = 18,435,545.40 × 8,003,406.20
  4. Step 4: Simplify right side
    12,308,078.30x = 147,547,158,354,741.47
  5. Step 5: Solve for x
    x = 147,547,158,354,741.47/12,308,078.30
  6. Step 6: Final answer
    x = 11,987,830.66

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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.