Home / 13,291,968.78-18,342,933.36-7,180,397.28

Finding the Fourth Proportional to 13,291,968.78, 18,342,933.36 and 7,180,397.28

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Solution

The fourth proportional to 13,291,968.78, 18,342,933.36 and 7,180,397.28 is: 9,908,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,968.78 : 18,342,933.36 = 7,180,397.28 : x
  2. Step 2: Convert to fraction form
    13,291,968.78/18,342,933.36 = 7,180,397.28/x
  3. Step 3: Cross multiply
    13,291,968.78x = 18,342,933.36 × 7,180,397.28
  4. Step 4: Simplify right side
    13,291,968.78x = 131,709,548,805,365.27
  5. Step 5: Solve for x
    x = 131,709,548,805,365.27/13,291,968.78
  6. Step 6: Final answer
    x = 9,908,957.13

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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.