Home / 11,862.36-17,767.80-7,688.84

Finding the Fourth Proportional to 11,862.36, 17,767.80 and 7,688.84

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Solution

The fourth proportional to 11,862.36, 17,767.80 and 7,688.84 is: 11,516.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.36 : 17,767.80 = 7,688.84 : x
  2. Step 2: Convert to fraction form
    11,862.36/17,767.80 = 7,688.84/x
  3. Step 3: Cross multiply
    11,862.36x = 17,767.80 × 7,688.84
  4. Step 4: Simplify right side
    11,862.36x = 136,613,682.51
  5. Step 5: Solve for x
    x = 136,613,682.51/11,862.36
  6. Step 6: Final answer
    x = 11,516.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.