Home / 13,508,821.17-18,640,742.69-7,628,098.93

Finding the Fourth Proportional to 13,508,821.17, 18,640,742.69 and 7,628,098.93

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Solution

The fourth proportional to 13,508,821.17, 18,640,742.69 and 7,628,098.93 is: 10,525,968.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508,821.17 : 18,640,742.69 = 7,628,098.93 : x
  2. Step 2: Convert to fraction form
    13,508,821.17/18,640,742.69 = 7,628,098.93/x
  3. Step 3: Cross multiply
    13,508,821.17x = 18,640,742.69 × 7,628,098.93
  4. Step 4: Simplify right side
    13,508,821.17x = 142,193,429,340,462.72
  5. Step 5: Solve for x
    x = 142,193,429,340,462.72/13,508,821.17
  6. Step 6: Final answer
    x = 10,525,968.74

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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.