Home / 15,004,904.72-20,706,789.12-8,129,386.80

Finding the Fourth Proportional to 15,004,904.72, 20,706,789.12 and 8,129,386.80

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Solution

The fourth proportional to 15,004,904.72, 20,706,789.12 and 8,129,386.80 is: 11,218,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,904.72 : 20,706,789.12 = 8,129,386.80 : x
  2. Step 2: Convert to fraction form
    15,004,904.72/20,706,789.12 = 8,129,386.80/x
  3. Step 3: Cross multiply
    15,004,904.72x = 20,706,789.12 × 8,129,386.80
  4. Step 4: Simplify right side
    15,004,904.72x = 168,333,498,142,511.62
  5. Step 5: Solve for x
    x = 168,333,498,142,511.62/15,004,904.72
  6. Step 6: Final answer
    x = 11,218,564.95

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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.