Home / 13,395.06-18,486.36-7,428.60

Finding the Fourth Proportional to 13,395.06, 18,486.36 and 7,428.60

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Solution

The fourth proportional to 13,395.06, 18,486.36 and 7,428.60 is: 10,252.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.06 : 18,486.36 = 7,428.60 : x
  2. Step 2: Convert to fraction form
    13,395.06/18,486.36 = 7,428.60/x
  3. Step 3: Cross multiply
    13,395.06x = 18,486.36 × 7,428.60
  4. Step 4: Simplify right side
    13,395.06x = 137,327,773.90
  5. Step 5: Solve for x
    x = 137,327,773.90/13,395.06
  6. Step 6: Final answer
    x = 10,252.12

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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.