Home / 13,098.47-18,076.48-7,721.13

Finding the Fourth Proportional to 13,098.47, 18,076.48 and 7,721.13

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Solution

The fourth proportional to 13,098.47, 18,076.48 and 7,721.13 is: 10,655.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.47 : 18,076.48 = 7,721.13 : x
  2. Step 2: Convert to fraction form
    13,098.47/18,076.48 = 7,721.13/x
  3. Step 3: Cross multiply
    13,098.47x = 18,076.48 × 7,721.13
  4. Step 4: Simplify right side
    13,098.47x = 139,570,761.64
  5. Step 5: Solve for x
    x = 139,570,761.64/13,098.47
  6. Step 6: Final answer
    x = 10,655.51

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1.5x scale

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.