Home / 13,132,743.90-18,128,022.82-7,905,995.14

Finding the Fourth Proportional to 13,132,743.90, 18,128,022.82 and 7,905,995.14

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Solution

The fourth proportional to 13,132,743.90, 18,128,022.82 and 7,905,995.14 is: 10,913,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132,743.90 : 18,128,022.82 = 7,905,995.14 : x
  2. Step 2: Convert to fraction form
    13,132,743.90/18,128,022.82 = 7,905,995.14/x
  3. Step 3: Cross multiply
    13,132,743.90x = 18,128,022.82 × 7,905,995.14
  4. Step 4: Simplify right side
    13,132,743.90x = 143,320,060,312,729.09
  5. Step 5: Solve for x
    x = 143,320,060,312,729.09/13,132,743.90
  6. Step 6: Final answer
    x = 10,913,184.74

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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.