Home / 13,121,212.72-18,107,281.32-7,319,994.48

Finding the Fourth Proportional to 13,121,212.72, 18,107,281.32 and 7,319,994.48

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Solution

The fourth proportional to 13,121,212.72, 18,107,281.32 and 7,319,994.48 is: 10,101,596.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,212.72 : 18,107,281.32 = 7,319,994.48 : x
  2. Step 2: Convert to fraction form
    13,121,212.72/18,107,281.32 = 7,319,994.48/x
  3. Step 3: Cross multiply
    13,121,212.72x = 18,107,281.32 × 7,319,994.48
  4. Step 4: Simplify right side
    13,121,212.72x = 132,545,199,310,207.12
  5. Step 5: Solve for x
    x = 132,545,199,310,207.12/13,121,212.72
  6. Step 6: Final answer
    x = 10,101,596.72

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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.