Home / 13,395.57-18,486.81-7,427.79

Finding the Fourth Proportional to 13,395.57, 18,486.81 and 7,427.79

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Solution

The fourth proportional to 13,395.57, 18,486.81 and 7,427.79 is: 10,250.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.57 : 18,486.81 = 7,427.79 : x
  2. Step 2: Convert to fraction form
    13,395.57/18,486.81 = 7,427.79/x
  3. Step 3: Cross multiply
    13,395.57x = 18,486.81 × 7,427.79
  4. Step 4: Simplify right side
    13,395.57x = 137,316,142.45
  5. Step 5: Solve for x
    x = 137,316,142.45/13,395.57
  6. Step 6: Final answer
    x = 10,250.86

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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.