Home / 13,260,656.80-18,288,788.88-7,822,900

Finding the Fourth Proportional to 13,260,656.80, 18,288,788.88 and 7,822,900

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Solution

The fourth proportional to 13,260,656.80, 18,288,788.88 and 7,822,900 is: 10,789,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,656.80 : 18,288,788.88 = 7,822,900 : x
  2. Step 2: Convert to fraction form
    13,260,656.80/18,288,788.88 = 7,822,900/x
  3. Step 3: Cross multiply
    13,260,656.80x = 18,288,788.88 × 7,822,900
  4. Step 4: Simplify right side
    13,260,656.80x = 143,071,366,529,352
  5. Step 5: Solve for x
    x = 143,071,366,529,352/13,260,656.80
  6. Step 6: Final answer
    x = 10,789,161.40

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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.