Home / 13,261.74-18,301.19-7,956.51

Finding the Fourth Proportional to 13,261.74, 18,301.19 and 7,956.51

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Solution

The fourth proportional to 13,261.74, 18,301.19 and 7,956.51 is: 10,979.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.74 : 18,301.19 = 7,956.51 : x
  2. Step 2: Convert to fraction form
    13,261.74/18,301.19 = 7,956.51/x
  3. Step 3: Cross multiply
    13,261.74x = 18,301.19 × 7,956.51
  4. Step 4: Simplify right side
    13,261.74x = 145,613,561.46
  5. Step 5: Solve for x
    x = 145,613,561.46/13,261.74
  6. Step 6: Final answer
    x = 10,979.97

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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.