Home / 13,447.81-18,558.44-7,398.31

Finding the Fourth Proportional to 13,447.81, 18,558.44 and 7,398.31

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Solution

The fourth proportional to 13,447.81, 18,558.44 and 7,398.31 is: 10,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.81 : 18,558.44 = 7,398.31 : x
  2. Step 2: Convert to fraction form
    13,447.81/18,558.44 = 7,398.31/x
  3. Step 3: Cross multiply
    13,447.81x = 18,558.44 × 7,398.31
  4. Step 4: Simplify right side
    13,447.81x = 137,301,092.24
  5. Step 5: Solve for x
    x = 137,301,092.24/13,447.81
  6. Step 6: Final answer
    x = 10,209.92

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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.