Home / 13,057.02-18,012.66-7,748.82

Finding the Fourth Proportional to 13,057.02, 18,012.66 and 7,748.82

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Solution

The fourth proportional to 13,057.02, 18,012.66 and 7,748.82 is: 10,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.02 : 18,012.66 = 7,748.82 : x
  2. Step 2: Convert to fraction form
    13,057.02/18,012.66 = 7,748.82/x
  3. Step 3: Cross multiply
    13,057.02x = 18,012.66 × 7,748.82
  4. Step 4: Simplify right side
    13,057.02x = 139,576,860.06
  5. Step 5: Solve for x
    x = 139,576,860.06/13,057.02
  6. Step 6: Final answer
    x = 10,689.79

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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.