Home / 13,309.81-18,367.54-7,341.48

Finding the Fourth Proportional to 13,309.81, 18,367.54 and 7,341.48

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Solution

The fourth proportional to 13,309.81, 18,367.54 and 7,341.48 is: 10,131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.81 : 18,367.54 = 7,341.48 : x
  2. Step 2: Convert to fraction form
    13,309.81/18,367.54 = 7,341.48/x
  3. Step 3: Cross multiply
    13,309.81x = 18,367.54 × 7,341.48
  4. Step 4: Simplify right side
    13,309.81x = 134,844,935.18
  5. Step 5: Solve for x
    x = 134,844,935.18/13,309.81
  6. Step 6: Final answer
    x = 10,131.24

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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.