Home / 12,985,918.62-17,921,095.20-7,184,605.88

Finding the Fourth Proportional to 12,985,918.62, 17,921,095.20 and 7,184,605.88

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Solution

The fourth proportional to 12,985,918.62, 17,921,095.20 and 7,184,605.88 is: 9,915,047.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,918.62 : 17,921,095.20 = 7,184,605.88 : x
  2. Step 2: Convert to fraction form
    12,985,918.62/17,921,095.20 = 7,184,605.88/x
  3. Step 3: Cross multiply
    12,985,918.62x = 17,921,095.20 × 7,184,605.88
  4. Step 4: Simplify right side
    12,985,918.62x = 128,756,005,860,354.30
  5. Step 5: Solve for x
    x = 128,756,005,860,354.30/12,985,918.62
  6. Step 6: Final answer
    x = 9,915,047.96

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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.