Home / 13,312,990.77-18,368,755.79-9,181,701.33

Finding the Fourth Proportional to 13,312,990.77, 18,368,755.79 and 9,181,701.33

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Solution

The fourth proportional to 13,312,990.77, 18,368,755.79 and 9,181,701.33 is: 12,668,560.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312,990.77 : 18,368,755.79 = 9,181,701.33 : x
  2. Step 2: Convert to fraction form
    13,312,990.77/18,368,755.79 = 9,181,701.33/x
  3. Step 3: Cross multiply
    13,312,990.77x = 18,368,755.79 × 9,181,701.33
  4. Step 4: Simplify right side
    13,312,990.77x = 168,656,429,467,488.19
  5. Step 5: Solve for x
    x = 168,656,429,467,488.19/13,312,990.77
  6. Step 6: Final answer
    x = 12,668,560.53

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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.