Home / 13,335.51-18,399.89-7,958.23

Finding the Fourth Proportional to 13,335.51, 18,399.89 and 7,958.23

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Solution

The fourth proportional to 13,335.51, 18,399.89 and 7,958.23 is: 10,980.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.51 : 18,399.89 = 7,958.23 : x
  2. Step 2: Convert to fraction form
    13,335.51/18,399.89 = 7,958.23/x
  3. Step 3: Cross multiply
    13,335.51x = 18,399.89 × 7,958.23
  4. Step 4: Simplify right side
    13,335.51x = 146,430,530.49
  5. Step 5: Solve for x
    x = 146,430,530.49/13,335.51
  6. Step 6: Final answer
    x = 10,980.49

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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.