Home / 13,338.97-18,407.81-7,289.28

Finding the Fourth Proportional to 13,338.97, 18,407.81 and 7,289.28

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Solution

The fourth proportional to 13,338.97, 18,407.81 and 7,289.28 is: 10,059.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.97 : 18,407.81 = 7,289.28 : x
  2. Step 2: Convert to fraction form
    13,338.97/18,407.81 = 7,289.28/x
  3. Step 3: Cross multiply
    13,338.97x = 18,407.81 × 7,289.28
  4. Step 4: Simplify right side
    13,338.97x = 134,179,681.28
  5. Step 5: Solve for x
    x = 134,179,681.28/13,338.97
  6. Step 6: Final answer
    x = 10,059.22

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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.