Home / 13,121,214.87-18,107,284.30-7,319,996.59

Finding the Fourth Proportional to 13,121,214.87, 18,107,284.30 and 7,319,996.59

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Solution

The fourth proportional to 13,121,214.87, 18,107,284.30 and 7,319,996.59 is: 10,101,599.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,214.87 : 18,107,284.30 = 7,319,996.59 : x
  2. Step 2: Convert to fraction form
    13,121,214.87/18,107,284.30 = 7,319,996.59/x
  3. Step 3: Cross multiply
    13,121,214.87x = 18,107,284.30 × 7,319,996.59
  4. Step 4: Simplify right side
    13,121,214.87x = 132,545,259,341,718.50
  5. Step 5: Solve for x
    x = 132,545,259,341,718.50/13,121,214.87
  6. Step 6: Final answer
    x = 10,101,599.64

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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.